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0001 [
0002 {
0003 "puzzle": "1 1 4 6",
0004 "solutions": [
0005 "6*4+1-1"
0006 ],
0007 "complexity": 2
0008 },
0009 {
0010 "puzzle": "1 1 11 11",
0011 "solutions": [
0012 "11+11+1+1"
0013 ],
0014 "complexity": 1
0015 },
0016 {
0017 "puzzle": "1 1 3 8",
0018 "solutions": [
0019 "8*3+1-1"
0020 ],
0021 "complexity": 2
0022 },
0023 {
0024 "puzzle": "1 1 1 8",
0025 "solutions": [
0026 "(1+1+1)*8"
0027 ],
0028 "complexity": 2
0029 },
0030 {
0031 "puzzle": "6 6 6 6",
0032 "solutions": [
0033 "6+6+6+6",
0034 "6*6-6-6"
0035 ],
0036 "complexity": 1
0037 },
0038 {
0039 "puzzle": "1 1 2 12",
0040 "solutions": [
0041 "12*2+1-1"
0042 ],
0043 "complexity": 2
0044 },
0045 {
0046 "puzzle": "1 2 2 6",
0047 "solutions": [
0048 "(6+2)*(2+1)",
0049 "6*2*2*1",
0050 "(2+2)*6*1"
0051 ],
0052 "complexity": 2
0053 },
0054 {
0055 "puzzle": "1 1 10 12",
0056 "solutions": [
0057 "12+10+1+1"
0058 ],
0059 "complexity": 1
0060 },
0061 {
0062 "puzzle": "1 1 1 12",
0063 "solutions": [
0064 "(1+1)*12*1"
0065 ],
0066 "complexity": 2
0067 },
0068 {
0069 "puzzle": "2 2 10 10",
0070 "solutions": [
0071 "10+10+2+2",
0072 "2*2+10+10"
0073 ],
0074 "complexity": 1
0075 },
0076 {
0077 "puzzle": "1 1 2 8",
0078 "solutions": [
0079 "(2+1)*8*1"
0080 ],
0081 "complexity": 2
0082 },
0083 {
0084 "puzzle": "1 1 4 8",
0085 "solutions": [
0086 "(8+4)*(1+1)",
0087 "(8-1-1)*4",
0088 "(4-1)*8*1"
0089 ],
0090 "complexity": 2
0091 },
0092 {
0093 "puzzle": "1 1 5 8",
0094 "solutions": [
0095 "(5-1-1)*8"
0096 ],
0097 "complexity": 2
0098 },
0099 {
0100 "puzzle": "2 2 2 12",
0101 "solutions": [
0102 "(2+2)*12\/2",
0103 "(2*2-2)*12",
0104 "12*2+2-2"
0105 ],
0106 "complexity": 2
0107 },
0108 {
0109 "puzzle": "1 1 3 12",
0110 "solutions": [
0111 "(3-1)*12*1"
0112 ],
0113 "complexity": 2
0114 },
0115 {
0116 "puzzle": "4 6 11 11",
0117 "solutions": [
0118 "6*4+11-11",
0119 "11+11+6-4"
0120 ],
0121 "complexity": 1
0122 },
0123 {
0124 "puzzle": "3 3 3 8",
0125 "solutions": [
0126 "8*3+3-3"
0127 ],
0128 "complexity": 2
0129 },
0130 {
0131 "puzzle": "1 1 4 12",
0132 "solutions": [
0133 "12*4\/(1+1)",
0134 "(4-1-1)*12"
0135 ],
0136 "complexity": 2
0137 },
0138 {
0139 "puzzle": "1 1 12 12",
0140 "solutions": [
0141 "12+12+1-1"
0142 ],
0143 "complexity": 1
0144 },
0145 {
0146 "puzzle": "1 1 2 6",
0147 "solutions": [
0148 "(1+1)*6*2",
0149 "(2+1+1)*6"
0150 ],
0151 "complexity": 2
0152 },
0153 {
0154 "puzzle": "1 1 2 11",
0155 "solutions": [
0156 "11*2+1+1",
0157 "(1+1)*11+2",
0158 "(11+1)*2*1"
0159 ],
0160 "complexity": 2
0161 },
0162 {
0163 "puzzle": "11 11 12 12",
0164 "solutions": [
0165 "12+12+11-11"
0166 ],
0167 "complexity": 1
0168 },
0169 {
0170 "puzzle": "1 2 3 4",
0171 "solutions": [
0172 "(3+2+1)*4",
0173 "4*3*2*1",
0174 "(4+2)*(3+1)"
0175 ],
0176 "complexity": 2
0177 },
0178 {
0179 "puzzle": "3 7 7 8",
0180 "solutions": [
0181 "8*3+7-7"
0182 ],
0183 "complexity": 2
0184 },
0185 {
0186 "puzzle": "1 1 13 13",
0187 "solutions": [
0188 "13+13-1-1"
0189 ],
0190 "complexity": 1
0191 },
0192 {
0193 "puzzle": "1 2 4 12",
0194 "solutions": [
0195 "(12-4)*(2+1)",
0196 "(2+1)*4+12",
0197 "12*4*1\/2",
0198 "(4-2)*12*1"
0199 ],
0200 "complexity": 2
0201 },
0202 {
0203 "puzzle": "1 1 3 6",
0204 "solutions": [
0205 "(6+1+1)*3",
0206 "(3+1)*6*1"
0207 ],
0208 "complexity": 2
0209 },
0210 {
0211 "puzzle": "1 1 3 9",
0212 "solutions": [
0213 "(9+3)*(1+1)",
0214 "(9-1)*3*1"
0215 ],
0216 "complexity": 2
0217 },
0218 {
0219 "puzzle": "1 1 5 6",
0220 "solutions": [
0221 "(5-1)*6*1",
0222 "(6-1)*5-1"
0223 ],
0224 "complexity": 2
0225 },
0226 {
0227 "puzzle": "4 6 7 7",
0228 "solutions": [
0229 "7+7+6+4",
0230 "6*4+7-7"
0231 ],
0232 "complexity": 1
0233 },
0234 {
0235 "puzzle": "1 1 2 13",
0236 "solutions": [
0237 "13*2-1-1",
0238 "(1+1)*13-2",
0239 "(13-1)*2*1"
0240 ],
0241 "complexity": 2
0242 },
0243 {
0244 "puzzle": "7 7 12 12",
0245 "solutions": [
0246 "(7+7-12)*12",
0247 "12+12+7-7"
0248 ],
0249 "complexity": 1
0250 },
0251 {
0252 "puzzle": "1 1 11 13",
0253 "solutions": [
0254 "13+11+1-1"
0255 ],
0256 "complexity": 1
0257 },
0258 {
0259 "puzzle": "2 11 11 12",
0260 "solutions": [
0261 "12*2+11-11"
0262 ],
0263 "complexity": 2
0264 },
0265 {
0266 "puzzle": "4 6 13 13",
0267 "solutions": [
0268 "6*4+13-13",
0269 "13+13+4-6"
0270 ],
0271 "complexity": 1
0272 },
0273 {
0274 "puzzle": "1 6 6 12",
0275 "solutions": [
0276 "(12+6+6)*1",
0277 "(6*6-12)*1",
0278 "(6\/6+1)*12"
0279 ],
0280 "complexity": 2
0281 },
0282 {
0283 "puzzle": "4 5 12 12",
0284 "solutions": [
0285 "(12+12)*(5-4)",
0286 "(5-12\/4)*12",
0287 "(12\/12+5)*4"
0288 ],
0289 "complexity": 2
0290 },
0291 {
0292 "puzzle": "4 4 4 6",
0293 "solutions": [
0294 "6*4+4-4"
0295 ],
0296 "complexity": 2
0297 },
0298 {
0299 "puzzle": "12 12 12 12",
0300 "solutions": [
0301 "12+12+12-12"
0302 ],
0303 "complexity": 1
0304 },
0305 {
0306 "puzzle": "1 1 1 11",
0307 "solutions": [
0308 "(11+1)*(1+1)"
0309 ],
0310 "complexity": 2
0311 },
0312 {
0313 "puzzle": "1 1 11 12",
0314 "solutions": [
0315 "(12+11+1)*1"
0316 ],
0317 "complexity": 2
0318 },
0319 {
0320 "puzzle": "2 7 7 12",
0321 "solutions": [
0322 "12+7+7-2",
0323 "12*2+7-7"
0324 ],
0325 "complexity": 1
0326 },
0327 {
0328 "puzzle": "10 10 12 12",
0329 "solutions": [
0330 "12+12+10-10"
0331 ],
0332 "complexity": 1
0333 },
0334 {
0335 "puzzle": "1 5 7 12",
0336 "solutions": [
0337 "(7-5)*12*1",
0338 "7*5+1-12",
0339 "(12+7+5)*1",
0340 "(12-7)*5-1"
0341 ],
0342 "complexity": 2
0343 },
0344 {
0345 "puzzle": "2 2 3 8",
0346 "solutions": [
0347 "8*3+2-2",
0348 "(8+3)*2+2"
0349 ],
0350 "complexity": 2
0351 },
0352 {
0353 "puzzle": "1 8 8 8",
0354 "solutions": [
0355 "(8+8+8)*1"
0356 ],
0357 "complexity": 2
0358 },
0359 {
0360 "puzzle": "3 8 13 13",
0361 "solutions": [
0362 "8*3+13-13"
0363 ],
0364 "complexity": 2
0365 },
0366 {
0367 "puzzle": "1 1 5 5",
0368 "solutions": [
0369 "(5+1)*(5-1)",
0370 "(5*5-1)*1"
0371 ],
0372 "complexity": 2
0373 },
0374 {
0375 "puzzle": "2 9 9 12",
0376 "solutions": [
0377 "12*2+9-9",
0378 "12\/2+9+9",
0379 "(9+9)*2-12"
0380 ],
0381 "complexity": 2
0382 },
0383 {
0384 "puzzle": "11 11 11 12",
0385 "solutions": [
0386 "(11+11)*12\/11",
0387 "11\/11+12+11"
0388 ],
0389 "complexity": 3
0390 },
0391 {
0392 "puzzle": "9 9 12 12",
0393 "solutions": [
0394 "12+12+9-9"
0395 ],
0396 "complexity": 1
0397 },
0398 {
0399 "puzzle": "3 3 12 12",
0400 "solutions": [
0401 "12*12\/(3+3)",
0402 "12+12+3-3",
0403 "(12-12\/3)*3"
0404 ],
0405 "complexity": 1
0406 },
0407 {
0408 "puzzle": "1 1 4 5",
0409 "solutions": [
0410 "(4+1)*5-1",
0411 "(5+1)*4*1"
0412 ],
0413 "complexity": 2
0414 },
0415 {
0416 "puzzle": "1 6 8 12",
0417 "solutions": [
0418 "(12-8)*6*1",
0419 "(8-6)*12*1",
0420 "(12\/6+1)*8"
0421 ],
0422 "complexity": 2
0423 },
0424 {
0425 "puzzle": "3 8 11 11",
0426 "solutions": [
0427 "8*3+11-11",
0428 "(11-3)*(11-8)"
0429 ],
0430 "complexity": 2
0431 },
0432 {
0433 "puzzle": "8 8 12 12",
0434 "solutions": [
0435 "12+12+8-8",
0436 "12*8\/(12-8)"
0437 ],
0438 "complexity": 1
0439 },
0440 {
0441 "puzzle": "5 6 12 12",
0442 "solutions": [
0443 "(12+12)*(6-5)",
0444 "(5-12\/12)*6"
0445 ],
0446 "complexity": 2
0447 },
0448 {
0449 "puzzle": "11 12 12 12",
0450 "solutions": [
0451 "12\/12+12+11",
0452 "(12+12)*(12-11)"
0453 ],
0454 "complexity": 2
0455 },
0456 {
0457 "puzzle": "12 12 13 13",
0458 "solutions": [
0459 "13+12+12-13"
0460 ],
0461 "complexity": 1
0462 },
0463 {
0464 "puzzle": "1 1 12 13",
0465 "solutions": [
0466 "(13+12-1)*1"
0467 ],
0468 "complexity": 2
0469 },
0470 {
0471 "puzzle": "1 3 5 12",
0472 "solutions": [
0473 "(5+1)*12\/3",
0474 "(12+1-5)*3",
0475 "(5-1)*3+12",
0476 "(5-3)*12*1"
0477 ],
0478 "complexity": 2
0479 },
0480 {
0481 "puzzle": "5 5 12 12",
0482 "solutions": [
0483 "(12-5-5)*12",
0484 "5*5-12\/12",
0485 "12+12+5-5"
0486 ],
0487 "complexity": 1
0488 },
0489 {
0490 "puzzle": "3 8 10 10",
0491 "solutions": [
0492 "8*3+10-10"
0493 ],
0494 "complexity": 2
0495 },
0496 {
0497 "puzzle": "1 9 9 12",
0498 "solutions": [
0499 "(9-1)*(12-9)",
0500 "(9\/9+1)*12"
0501 ],
0502 "complexity": 2
0503 },
0504 {
0505 "puzzle": "3 8 9 9",
0506 "solutions": [
0507 "8*3+9-9"
0508 ],
0509 "complexity": 2
0510 },
0511 {
0512 "puzzle": "3 4 4 8",
0513 "solutions": [
0514 "4*3+8+4",
0515 "8*3+4-4",
0516 "(8-3)*4+4",
0517 "(4*4-8)*3"
0518 ],
0519 "complexity": 2
0520 },
0521 {
0522 "puzzle": "2 3 3 12",
0523 "solutions": [
0524 "12*2+3-3",
0525 "(3+3)*2+12"
0526 ],
0527 "complexity": 2
0528 },
0529 {
0530 "puzzle": "2 5 5 12",
0531 "solutions": [
0532 "12+5+5+2",
0533 "12*2+5-5"
0534 ],
0535 "complexity": 1
0536 },
0537 {
0538 "puzzle": "11 11 11 13",
0539 "solutions": [
0540 "13+11+11-11"
0541 ],
0542 "complexity": 1
0543 },
0544 {
0545 "puzzle": "2 12 13 13",
0546 "solutions": [
0547 "12*2+13-13"
0548 ],
0549 "complexity": 2
0550 },
0551 {
0552 "puzzle": "7 7 11 12",
0553 "solutions": [
0554 "7\/7+12+11",
0555 "(12-7)*7-11"
0556 ],
0557 "complexity": 2
0558 },
0559 {
0560 "puzzle": "1 4 10 10",
0561 "solutions": [
0562 "(10+10+4)*1",
0563 "10*10\/4-1"
0564 ],
0565 "complexity": 2
0566 },
0567 {
0568 "puzzle": "5 5 11 12",
0569 "solutions": [
0570 "5*5+11-12",
0571 "5\/5+12+11",
0572 "(12-5)*5-11"
0573 ],
0574 "complexity": 2
0575 },
0576 {
0577 "puzzle": "1 1 3 7",
0578 "solutions": [
0579 "(7-1)*(3+1)",
0580 "(7+1)*3*1"
0581 ],
0582 "complexity": 2
0583 },
0584 {
0585 "puzzle": "1 3 4 12",
0586 "solutions": [
0587 "(12-4)*3*1",
0588 "(4+1-3)*12",
0589 "12*4\/(3-1)",
0590 "(4*3+12)*1"
0591 ],
0592 "complexity": 2
0593 },
0594 {
0595 "puzzle": "4 4 12 12",
0596 "solutions": [
0597 "12+12+4-4",
0598 "(12-4)*12\/4"
0599 ],
0600 "complexity": 1
0601 },
0602 {
0603 "puzzle": "1 2 5 8",
0604 "solutions": [
0605 "(5+1)*8\/2",
0606 "(8+5-1)*2",
0607 "(8-2)*(5-1)",
0608 "(5-2)*8*1"
0609 ],
0610 "complexity": 2
0611 },
0612 {
0613 "puzzle": "2 2 4 6",
0614 "solutions": [
0615 "6*4+2-2",
0616 "(4+2)*(6-2)",
0617 "(6+4+2)*2",
0618 "(4-2)*6*2",
0619 "(4\/2+2)*6"
0620 ],
0621 "complexity": 2
0622 },
0623 {
0624 "puzzle": "3 5 5 8",
0625 "solutions": [
0626 "(5+3)*(8-5)",
0627 "8*3+5-5"
0628 ],
0629 "complexity": 2
0630 },
0631 {
0632 "puzzle": "1 8 9 12",
0633 "solutions": [
0634 "(12-9)*8*1",
0635 "(9+1-8)*12"
0636 ],
0637 "complexity": 2
0638 },
0639 {
0640 "puzzle": "1 3 10 10",
0641 "solutions": [
0642 "10+10+3+1"
0643 ],
0644 "complexity": 1
0645 },
0646 {
0647 "puzzle": "6 7 12 12",
0648 "solutions": [
0649 "(12+12)*(7-6)"
0650 ],
0651 "complexity": 2
0652 },
0653 {
0654 "puzzle": "2 3 12 12",
0655 "solutions": [
0656 "12*12\/3\/2",
0657 "(12+12)*(3-2)",
0658 "(12*3+12)\/2",
0659 "(12\/3-2)*12"
0660 ],
0661 "complexity": 2
0662 },
0663 {
0664 "puzzle": "1 1 1 13",
0665 "solutions": [
0666 "(13-1)*(1+1)"
0667 ],
0668 "complexity": 2
0669 },
0670 {
0671 "puzzle": "1 4 7 12",
0672 "solutions": [
0673 "12+7+4+1",
0674 "(7-4-1)*12",
0675 "(7+1)*12\/4",
0676 "(12+1-7)*4"
0677 ],
0678 "complexity": 1
0679 },
0680 {
0681 "puzzle": "1 6 7 12",
0682 "solutions": [
0683 "12+7+6-1",
0684 "(7+1-6)*12",
0685 "(12-7-1)*6",
0686 "(7-1)*6-12"
0687 ],
0688 "complexity": 1
0689 },
0690 {
0691 "puzzle": "2 3 3 8",
0692 "solutions": [
0693 "(3*2-3)*8",
0694 "(3-2)*8*3",
0695 "(3+3)*8\/2",
0696 "(3\/3+2)*8"
0697 ],
0698 "complexity": 2
0699 },
0700 {
0701 "puzzle": "1 3 3 4",
0702 "solutions": [
0703 "(4+3+1)*3",
0704 "(3-1)*4*3",
0705 "(3+3)*4*1"
0706 ],
0707 "complexity": 2
0708 },
0709 {
0710 "puzzle": "8 8 11 13",
0711 "solutions": [
0712 "13+11+8-8",
0713 "(13-11)*8+8"
0714 ],
0715 "complexity": 1
0716 },
0717 {
0718 "puzzle": "1 8 8 12",
0719 "solutions": [
0720 "(12-8-1)*8",
0721 "(8\/8+1)*12"
0722 ],
0723 "complexity": 2
0724 },
0725 {
0726 "puzzle": "2 7 7 8",
0727 "solutions": [
0728 "8+7+7+2",
0729 "(7\/7+2)*8"
0730 ],
0731 "complexity": 1
0732 },
0733 {
0734 "puzzle": "3 7 8 8",
0735 "solutions": [
0736 "(7-3)*8-8",
0737 "(8-7)*8*3",
0738 "(8\/8+7)*3"
0739 ],
0740 "complexity": 2
0741 },
0742 {
0743 "puzzle": "1 1 4 7",
0744 "solutions": [
0745 "(7-1)*4*1",
0746 "(7+1)*(4-1)"
0747 ],
0748 "complexity": 2
0749 },
0750 {
0751 "puzzle": "4 4 11 13",
0752 "solutions": [
0753 "13+11+4-4",
0754 "(13+4-11)*4"
0755 ],
0756 "complexity": 1
0757 },
0758 {
0759 "puzzle": "5 5 7 7",
0760 "solutions": [
0761 "7+7+5+5",
0762 "7*7-5*5",
0763 "5*5-7\/7",
0764 "(7+5)*(7-5)"
0765 ],
0766 "complexity": 1
0767 },
0768 {
0769 "puzzle": "7 8 12 12",
0770 "solutions": [
0771 "(12+12)*(8-7)"
0772 ],
0773 "complexity": 2
0774 },
0775 {
0776 "puzzle": "9 9 11 12",
0777 "solutions": [
0778 "9\/9+12+11",
0779 "(12-9)*11-9"
0780 ],
0781 "complexity": 2
0782 },
0783 {
0784 "puzzle": "1 2 5 12",
0785 "solutions": [
0786 "(5-2-1)*12",
0787 "(5+1)*2+12",
0788 "(5-1)*12\/2"
0789 ],
0790 "complexity": 2
0791 },
0792 {
0793 "puzzle": "1 7 9 12",
0794 "solutions": [
0795 "(7+1)*(12-9)",
0796 "(9-7)*12*1"
0797 ],
0798 "complexity": 2
0799 },
0800 {
0801 "puzzle": "1 1 10 13",
0802 "solutions": [
0803 "(13+10+1)*1"
0804 ],
0805 "complexity": 2
0806 },
0807 {
0808 "puzzle": "4 6 6 6",
0809 "solutions": [
0810 "6*4+6-6",
0811 "(6+6)*(6-4)"
0812 ],
0813 "complexity": 2
0814 },
0815 {
0816 "puzzle": "1 1 2 10",
0817 "solutions": [
0818 "(10+2)*(1+1)",
0819 "(10+1+1)*2"
0820 ],
0821 "complexity": 2
0822 },
0823 {
0824 "puzzle": "1 6 9 12",
0825 "solutions": [
0826 "(9-6-1)*12",
0827 "(12+1-9)*6"
0828 ],
0829 "complexity": 2
0830 },
0831 {
0832 "puzzle": "3 3 4 6",
0833 "solutions": [
0834 "6*4+3-3"
0835 ],
0836 "complexity": 2
0837 },
0838 {
0839 "puzzle": "4 5 5 6",
0840 "solutions": [
0841 "6*4+5-5"
0842 ],
0843 "complexity": 2
0844 },
0845 {
0846 "puzzle": "4 5 11 12",
0847 "solutions": [
0848 "(11-5-4)*12",
0849 "12+11+5-4",
0850 "(12+5-11)*4"
0851 ],
0852 "complexity": 1
0853 },
0854 {
0855 "puzzle": "2 2 12 12",
0856 "solutions": [
0857 "12+12+2-2",
0858 "(12*2-12)*2"
0859 ],
0860 "complexity": 1
0861 },
0862 {
0863 "puzzle": "3 7 7 7",
0864 "solutions": [
0865 "7+7+7+3",
0866 "(7\/7+7)*3"
0867 ],
0868 "complexity": 1
0869 },
0870 {
0871 "puzzle": "1 2 2 10",
0872 "solutions": [
0873 "(10-2)*(2+1)",
0874 "(10+2)*2*1",
0875 "(10+1)*2+2"
0876 ],
0877 "complexity": 2
0878 },
0879 {
0880 "puzzle": "1 6 6 11",
0881 "solutions": [
0882 "11+6+6+1",
0883 "(11-6-1)*6",
0884 "6*6-11-1"
0885 ],
0886 "complexity": 1
0887 },
0888 {
0889 "puzzle": "1 7 7 10",
0890 "solutions": [
0891 "(7+1)*(10-7)",
0892 "(10+7+7)*1"
0893 ],
0894 "complexity": 2
0895 },
0896 {
0897 "puzzle": "2 2 2 3",
0898 "solutions": [
0899 "(2+2)*3*2",
0900 "3*2*2*2"
0901 ],
0902 "complexity": 2
0903 },
0904 {
0905 "puzzle": "4 8 11 11",
0906 "solutions": [
0907 "8\/4+11+11",
0908 "(4-11\/11)*8"
0909 ],
0910 "complexity": 3
0911 },
0912 {
0913 "puzzle": "3 3 11 12",
0914 "solutions": [
0915 "(11-3*3)*12",
0916 "3\/3+12+11",
0917 "11*3+3-12"
0918 ],
0919 "complexity": 2
0920 },
0921 {
0922 "puzzle": "4 4 11 12",
0923 "solutions": [
0924 "4\/4+12+11"
0925 ],
0926 "complexity": 3
0927 },
0928 {
0929 "puzzle": "12 12 12 13",
0930 "solutions": [
0931 "(12+12)*(13-12)",
0932 "13+12-12\/12"
0933 ],
0934 "complexity": 2
0935 },
0936 {
0937 "puzzle": "3 6 11 11",
0938 "solutions": [
0939 "6\/3+11+11",
0940 "(11\/11+3)*6"
0941 ],
0942 "complexity": 3
0943 },
0944 {
0945 "puzzle": "3 8 8 8",
0946 "solutions": [
0947 "8*3+8-8",
0948 "(8*8+8)\/3"
0949 ],
0950 "complexity": 2
0951 },
0952 {
0953 "puzzle": "8 9 12 12",
0954 "solutions": [
0955 "(12+12)*(9-8)",
0956 "(12-8)*9-12",
0957 "12*12\/9+8"
0958 ],
0959 "complexity": 2
0960 },
0961 {
0962 "puzzle": "2 8 9 9",
0963 "solutions": [
0964 "9+9+8-2",
0965 "(9\/9+2)*8"
0966 ],
0967 "complexity": 1
0968 },
0969 {
0970 "puzzle": "1 2 2 12",
0971 "solutions": [
0972 "(2-1)*12*2",
0973 "(12+1)*2-2",
0974 "(12-1)*2+2",
0975 "(2\/2+1)*12"
0976 ],
0977 "complexity": 2
0978 },
0979 {
0980 "puzzle": "1 5 8 8",
0981 "solutions": [
0982 "(5-1)*8-8",
0983 "(8-5)*8*1"
0984 ],
0985 "complexity": 2
0986 },
0987 {
0988 "puzzle": "2 2 3 12",
0989 "solutions": [
0990 "(2+2)*3+12",
0991 "(12-2-2)*3",
0992 "3*2*2+12",
0993 "(12-2*2)*3",
0994 "(3-2\/2)*12",
0995 "(3-2)*12*2",
0996 "(12\/2+2)*3"
0997 ],
0998 "complexity": 2
0999 },
1000 {
1001 "puzzle": "6 6 12 12",
1002 "solutions": [
1003 "12+12+6-6",
1004 "(12-6)*6-12"
1005 ],
1006 "complexity": 1
1007 },
1008 {
1009 "puzzle": "7 7 11 13",
1010 "solutions": [
1011 "13+11+7-7",
1012 "(13-7)*(11-7)"
1013 ],
1014 "complexity": 1
1015 },
1016 {
1017 "puzzle": "1 5 6 12",
1018 "solutions": [
1019 "12+6+5+1",
1020 "(5+1)*6-12",
1021 "(6+1-5)*12",
1022 "(12-6)*(5-1)"
1023 ],
1024 "complexity": 1
1025 },
1026 {
1027 "puzzle": "4 6 9 9",
1028 "solutions": [
1029 "6*4+9-9"
1030 ],
1031 "complexity": 2
1032 },
1033 {
1034 "puzzle": "6 6 11 13",
1035 "solutions": [
1036 "(6+6)*(13-11)",
1037 "13+11+6-6",
1038 "(11+6-13)*6"
1039 ],
1040 "complexity": 1
1041 },
1042 {
1043 "puzzle": "1 4 4 12",
1044 "solutions": [
1045 "(12-4)*(4-1)",
1046 "(4-1)*4+12",
1047 "(4\/4+1)*12"
1048 ],
1049 "complexity": 2
1050 },
1051 {
1052 "puzzle": "1 4 6 12",
1053 "solutions": [
1054 "(12-6)*4*1",
1055 "12*6\/(4-1)",
1056 "(6-4)*12*1",
1057 "(12\/4+1)*6"
1058 ],
1059 "complexity": 2
1060 },
1061 {
1062 "puzzle": "3 4 4 6",
1063 "solutions": [
1064 "(6-4)*4*3",
1065 "(4*3-6)*4",
1066 "(4-3)*6*4",
1067 "(4+4)*(6-3)",
1068 "(6\/3+4)*4",
1069 "(4\/4+3)*6"
1070 ],
1071 "complexity": 2
1072 },
1073 {
1074 "puzzle": "9 9 11 13",
1075 "solutions": [
1076 "13+11+9-9"
1077 ],
1078 "complexity": 1
1079 },
1080 {
1081 "puzzle": "3 8 12 13",
1082 "solutions": [
1083 "(13-8-3)*12",
1084 "(13-12)*8*3",
1085 "(13+3)*12\/8"
1086 ],
1087 "complexity": 2
1088 },
1089 {
1090 "puzzle": "1 8 10 12",
1091 "solutions": [
1092 "(12+1-10)*8",
1093 "(10-8)*12*1"
1094 ],
1095 "complexity": 2
1096 },
1097 {
1098 "puzzle": "11 13 13 13",
1099 "solutions": [
1100 "13+13+11-13"
1101 ],
1102 "complexity": 1
1103 },
1104 {
1105 "puzzle": "4 6 6 7",
1106 "solutions": [
1107 "(7-6)*6*4",
1108 "(7-4)*6+6",
1109 "(7-6\/6)*4"
1110 ],
1111 "complexity": 2
1112 },
1113 {
1114 "puzzle": "2 4 4 12",
1115 "solutions": [
1116 "(12-4-2)*4",
1117 "4*2+12+4",
1118 "12*4\/(4-2)",
1119 "(4-4\/2)*12",
1120 "12*2+4-4"
1121 ],
1122 "complexity": 2
1123 },
1124 {
1125 "puzzle": "3 6 7 7",
1126 "solutions": [
1127 "(7+7-6)*3",
1128 "(7\/7+3)*6"
1129 ],
1130 "complexity": 2
1131 },
1132 {
1133 "puzzle": "4 6 8 8",
1134 "solutions": [
1135 "6*4+8-8",
1136 "(6-4)*8+8",
1137 "(8+8)*6\/4",
1138 "(8+4)*(8-6)"
1139 ],
1140 "complexity": 2
1141 },
1142 {
1143 "puzzle": "1 3 6 12",
1144 "solutions": [
1145 "(12-6)*(3+1)",
1146 "(6-3-1)*12",
1147 "12*6*1\/3",
1148 "(3-1)*6+12"
1149 ],
1150 "complexity": 2
1151 },
1152 {
1153 "puzzle": "3 4 11 13",
1154 "solutions": [
1155 "(13-11)*4*3",
1156 "(13+11)*(4-3)",
1157 "11*3+4-13",
1158 "13*3-11-4"
1159 ],
1160 "complexity": 2
1161 },
1162 {
1163 "puzzle": "5 6 11 12",
1164 "solutions": [
1165 "12+11+6-5",
1166 "(11+5-12)*6",
1167 "(11-5)*6-12"
1168 ],
1169 "complexity": 1
1170 },
1171 {
1172 "puzzle": "1 4 5 12",
1173 "solutions": [
1174 "(5+1-4)*12",
1175 "(12-5-1)*4"
1176 ],
1177 "complexity": 2
1178 },
1179 {
1180 "puzzle": "1 4 8 12",
1181 "solutions": [
1182 "12*8*1\/4",
1183 "(8+1)*4-12",
1184 "(12+8+4)*1"
1185 ],
1186 "complexity": 2
1187 },
1188 {
1189 "puzzle": "2 4 11 11",
1190 "solutions": [
1191 "11+11+4-2",
1192 "4\/2+11+11"
1193 ],
1194 "complexity": 1
1195 },
1196 {
1197 "puzzle": "2 10 10 12",
1198 "solutions": [
1199 "(10+2)*(12-10)",
1200 "12*2+10-10"
1201 ],
1202 "complexity": 2
1203 },
1204 {
1205 "puzzle": "3 6 6 8",
1206 "solutions": [
1207 "8*3+6-6",
1208 "(8-3)*6-6"
1209 ],
1210 "complexity": 2
1211 },
1212 {
1213 "puzzle": "6 6 10 13",
1214 "solutions": [
1215 "6\/6+13+10",
1216 "(13-10)*6+6"
1217 ],
1218 "complexity": 2
1219 },
1220 {
1221 "puzzle": "1 3 3 12",
1222 "solutions": [
1223 "(3+1)*3+12",
1224 "(12-3-1)*3",
1225 "(3\/3+1)*12"
1226 ],
1227 "complexity": 2
1228 },
1229 {
1230 "puzzle": "1 12 13 13",
1231 "solutions": [
1232 "(13\/13+1)*12"
1233 ],
1234 "complexity": 3
1235 },
1236 {
1237 "puzzle": "3 6 13 13",
1238 "solutions": [
1239 "13+13-6\/3",
1240 "(13\/13+3)*6"
1241 ],
1242 "complexity": 3
1243 },
1244 {
1245 "puzzle": "3 8 10 11",
1246 "solutions": [
1247 "(11-10)*8*3"
1248 ],
1249 "complexity": 2
1250 },
1251 {
1252 "puzzle": "4 6 10 11",
1253 "solutions": [
1254 "(11-10)*6*4"
1255 ],
1256 "complexity": 2
1257 },
1258 {
1259 "puzzle": "10 11 12 12",
1260 "solutions": [
1261 "(12+12)*(11-10)",
1262 "(12+10)*12\/11"
1263 ],
1264 "complexity": 2
1265 },
1266 {
1267 "puzzle": "4 8 10 10",
1268 "solutions": [
1269 "10+10+8-4",
1270 "(10-8)*10+4",
1271 "(4-10\/10)*8"
1272 ],
1273 "complexity": 1
1274 },
1275 {
1276 "puzzle": "10 10 11 13",
1277 "solutions": [
1278 "13+11+10-10"
1279 ],
1280 "complexity": 1
1281 },
1282 {
1283 "puzzle": "1 11 11 12",
1284 "solutions": [
1285 "(11\/11+1)*12"
1286 ],
1287 "complexity": 3
1288 },
1289 {
1290 "puzzle": "2 8 8 12",
1291 "solutions": [
1292 "(8-2)*(12-8)",
1293 "8\/2+12+8",
1294 "12*2+8-8"
1295 ],
1296 "complexity": 2
1297 },
1298 {
1299 "puzzle": "4 5 12 13",
1300 "solutions": [
1301 "13+12+4-5",
1302 "(13-5)*12\/4",
1303 "(13+5-12)*4"
1304 ],
1305 "complexity": 1
1306 },
1307 {
1308 "puzzle": "5 5 5 5",
1309 "solutions": [
1310 "5*5-5\/5"
1311 ],
1312 "complexity": 3
1313 },
1314 {
1315 "puzzle": "1 1 3 13",
1316 "solutions": [
1317 "(13-1)*(3-1)"
1318 ],
1319 "complexity": 2
1320 },
1321 {
1322 "puzzle": "1 2 11 11",
1323 "solutions": [
1324 "(11+11+2)*1"
1325 ],
1326 "complexity": 2
1327 },
1328 {
1329 "puzzle": "1 3 6 8",
1330 "solutions": [
1331 "(8-3-1)*6",
1332 "8*6\/(3-1)",
1333 "(6-3)*8*1",
1334 "(6\/3+1)*8"
1335 ],
1336 "complexity": 2
1337 },
1338 {
1339 "puzzle": "9 10 12 12",
1340 "solutions": [
1341 "(12+12)*(10-9)"
1342 ],
1343 "complexity": 2
1344 },
1345 {
1346 "puzzle": "1 2 6 6",
1347 "solutions": [
1348 "(2+1)*6+6",
1349 "(6+6)*2*1",
1350 "(6-2)*6*1",
1351 "(6\/2+1)*6"
1352 ],
1353 "complexity": 2
1354 },
1355 {
1356 "puzzle": "1 7 8 9",
1357 "solutions": [
1358 "(9+1-7)*8",
1359 "(9+8+7)*1"
1360 ],
1361 "complexity": 2
1362 },
1363 {
1364 "puzzle": "1 6 12 12",
1365 "solutions": [
1366 "12*12*1\/6"
1367 ],
1368 "complexity": 3
1369 },
1370 {
1371 "puzzle": "1 7 8 10",
1372 "solutions": [
1373 "10+8+7-1",
1374 "(10-7)*8*1"
1375 ],
1376 "complexity": 1
1377 },
1378 {
1379 "puzzle": "2 8 10 10",
1380 "solutions": [
1381 "8\/2+10+10",
1382 "(10+2)*(10-8)",
1383 "(10+10-8)*2",
1384 "(10\/10+2)*8"
1385 ],
1386 "complexity": 2
1387 },
1388 {
1389 "puzzle": "3 7 10 10",
1390 "solutions": [
1391 "10+10+7-3",
1392 "(10\/10+7)*3"
1393 ],
1394 "complexity": 1
1395 },
1396 {
1397 "puzzle": "4 6 10 10",
1398 "solutions": [
1399 "6*4+10-10",
1400 "10*4-10-6",
1401 "(10-4)*(10-6)"
1402 ],
1403 "complexity": 2
1404 },
1405 {
1406 "puzzle": "1 2 4 4",
1407 "solutions": [
1408 "(4+4)*(2+1)",
1409 "(4+2)*4*1",
1410 "(4-1)*4*2"
1411 ],
1412 "complexity": 2
1413 },
1414 {
1415 "puzzle": "1 2 6 12",
1416 "solutions": [
1417 "12*6\/(2+1)",
1418 "(6*2+12)*1",
1419 "(6\/2-1)*12"
1420 ],
1421 "complexity": 2
1422 },
1423 {
1424 "puzzle": "1 6 7 10",
1425 "solutions": [
1426 "10+7+6+1",
1427 "(10+1-7)*6",
1428 "(7-1)*(10-6)"
1429 ],
1430 "complexity": 1
1431 },
1432 {
1433 "puzzle": "1 5 7 11",
1434 "solutions": [
1435 "11+7+5+1",
1436 "(5+1)*(11-7)",
1437 "(11+1)*(7-5)",
1438 "(7*5-11)*1"
1439 ],
1440 "complexity": 1
1441 },
1442 {
1443 "puzzle": "1 10 10 12",
1444 "solutions": [
1445 "(10\/10+1)*12"
1446 ],
1447 "complexity": 3
1448 },
1449 {
1450 "puzzle": "4 5 5 5",
1451 "solutions": [
1452 "5*5+4-5",
1453 "(5\/5+5)*4"
1454 ],
1455 "complexity": 2
1456 },
1457 {
1458 "puzzle": "1 5 8 12",
1459 "solutions": [
1460 "(5+1)*(12-8)",
1461 "(8-5-1)*12",
1462 "12+8+5-1",
1463 "12*8\/(5-1)"
1464 ],
1465 "complexity": 1
1466 },
1467 {
1468 "puzzle": "1 2 10 12",
1469 "solutions": [
1470 "(12+10+2)*1"
1471 ],
1472 "complexity": 2
1473 },
1474 {
1475 "puzzle": "2 2 11 13",
1476 "solutions": [
1477 "13+11+2-2"
1478 ],
1479 "complexity": 1
1480 },
1481 {
1482 "puzzle": "3 9 9 9",
1483 "solutions": [
1484 "9+9+9-3",
1485 "(9*9-9)\/3",
1486 "(9-9\/9)*3"
1487 ],
1488 "complexity": 1
1489 },
1490 {
1491 "puzzle": "4 8 13 13",
1492 "solutions": [
1493 "13+13-8\/4",
1494 "(4-13\/13)*8"
1495 ],
1496 "complexity": 3
1497 },
1498 {
1499 "puzzle": "1 1 4 4",
1500 "solutions": [
1501 "(4+1+1)*4"
1502 ],
1503 "complexity": 2
1504 },
1505 {
1506 "puzzle": "3 8 12 12",
1507 "solutions": [
1508 "8*3+12-12",
1509 "12\/3+12+8",
1510 "(12-8)*3+12"
1511 ],
1512 "complexity": 2
1513 },
1514 {
1515 "puzzle": "1 1 6 6",
1516 "solutions": [
1517 "(6+6)*(1+1)",
1518 "(6-1-1)*6"
1519 ],
1520 "complexity": 2
1521 },
1522 {
1523 "puzzle": "1 2 4 8",
1524 "solutions": [
1525 "(8+4)*2*1",
1526 "(4+1-2)*8",
1527 "(8-2)*4*1",
1528 "(4\/2+1)*8"
1529 ],
1530 "complexity": 2
1531 },
1532 {
1533 "puzzle": "3 4 12 12",
1534 "solutions": [
1535 "(12+12)*(4-3)",
1536 "(12-3)*4-12"
1537 ],
1538 "complexity": 2
1539 },
1540 {
1541 "puzzle": "1 3 9 12",
1542 "solutions": [
1543 "(3+1)*9-12",
1544 "(12-1)*3-9",
1545 "(12+9+3)*1",
1546 "(9\/3-1)*12"
1547 ],
1548 "complexity": 2
1549 },
1550 {
1551 "puzzle": "1 6 8 9",
1552 "solutions": [
1553 "9+8+6+1",
1554 "(9-6)*8*1"
1555 ],
1556 "complexity": 1
1557 },
1558 {
1559 "puzzle": "1 2 6 8",
1560 "solutions": [
1561 "(6-2-1)*8",
1562 "8*6*1\/2",
1563 "(8+1)*2+6"
1564 ],
1565 "complexity": 2
1566 },
1567 {
1568 "puzzle": "4 7 7 8",
1569 "solutions": [
1570 "(7+7-8)*4",
1571 "(4-7\/7)*8"
1572 ],
1573 "complexity": 2
1574 },
1575 {
1576 "puzzle": "3 3 11 13",
1577 "solutions": [
1578 "13+11+3-3"
1579 ],
1580 "complexity": 1
1581 },
1582 {
1583 "puzzle": "1 7 8 8",
1584 "solutions": [
1585 "8+8+7+1"
1586 ],
1587 "complexity": 1
1588 },
1589 {
1590 "puzzle": "2 2 11 12",
1591 "solutions": [
1592 "2\/2+12+11"
1593 ],
1594 "complexity": 3
1595 },
1596 {
1597 "puzzle": "3 8 11 12",
1598 "solutions": [
1599 "(12-11)*8*3"
1600 ],
1601 "complexity": 2
1602 },
1603 {
1604 "puzzle": "5 6 12 13",
1605 "solutions": [
1606 "(13-6-5)*12",
1607 "13+12+5-6",
1608 "(12+5-13)*6"
1609 ],
1610 "complexity": 1
1611 },
1612 {
1613 "puzzle": "1 1 3 4",
1614 "solutions": [
1615 "(1+1)*4*3"
1616 ],
1617 "complexity": 2
1618 },
1619 {
1620 "puzzle": "1 1 9 13",
1621 "solutions": [
1622 "13+9+1+1"
1623 ],
1624 "complexity": 1
1625 },
1626 {
1627 "puzzle": "2 11 12 12",
1628 "solutions": [
1629 "(12-11)*12*2",
1630 "(12\/12+11)*2"
1631 ],
1632 "complexity": 2
1633 },
1634 {
1635 "puzzle": "3 3 4 8",
1636 "solutions": [
1637 "(3+3)*(8-4)",
1638 "(4-3\/3)*8",
1639 "(4-3)*8*3"
1640 ],
1641 "complexity": 2
1642 },
1643 {
1644 "puzzle": "2 8 13 13",
1645 "solutions": [
1646 "(13\/13+2)*8"
1647 ],
1648 "complexity": 3
1649 },
1650 {
1651 "puzzle": "1 7 7 12",
1652 "solutions": [
1653 "(7\/7+1)*12"
1654 ],
1655 "complexity": 3
1656 },
1657 {
1658 "puzzle": "2 11 11 11",
1659 "solutions": [
1660 "(11\/11+11)*2"
1661 ],
1662 "complexity": 3
1663 },
1664 {
1665 "puzzle": "10 13 13 13",
1666 "solutions": [
1667 "13\/13+13+10"
1668 ],
1669 "complexity": 3
1670 },
1671 {
1672 "puzzle": "1 2 3 10",
1673 "solutions": [
1674 "10*2+3+1",
1675 "(10-2)*3*1",
1676 "(10+3-1)*2",
1677 "(10+2)*(3-1)"
1678 ],
1679 "complexity": 2
1680 },
1681 {
1682 "puzzle": "1 5 7 13",
1683 "solutions": [
1684 "13+7+5-1",
1685 "(13-7)*(5-1)",
1686 "(13-1)*(7-5)"
1687 ],
1688 "complexity": 1
1689 },
1690 {
1691 "puzzle": "2 3 11 12",
1692 "solutions": [
1693 "12+11+3-2"
1694 ],
1695 "complexity": 1
1696 },
1697 {
1698 "puzzle": "2 13 13 13",
1699 "solutions": [
1700 "(13-13\/13)*2"
1701 ],
1702 "complexity": 3
1703 },
1704 {
1705 "puzzle": "3 3 3 12",
1706 "solutions": [
1707 "(3+3)*12\/3",
1708 "3*3+12+3",
1709 "(3-3\/3)*12",
1710 "(12-3)*3-3"
1711 ],
1712 "complexity": 2
1713 },
1714 {
1715 "puzzle": "5 5 12 13",
1716 "solutions": [
1717 "5*5+12-13",
1718 "13+12-5\/5"
1719 ],
1720 "complexity": 2
1721 },
1722 {
1723 "puzzle": "1 5 5 12",
1724 "solutions": [
1725 "(5\/5+1)*12"
1726 ],
1727 "complexity": 3
1728 },
1729 {
1730 "puzzle": "4 7 12 12",
1731 "solutions": [
1732 "(7-4)*12-12",
1733 "(12*7+12)\/4",
1734 "(7-12\/12)*4"
1735 ],
1736 "complexity": 2
1737 },
1738 {
1739 "puzzle": "5 5 11 13",
1740 "solutions": [
1741 "13+11+5-5"
1742 ],
1743 "complexity": 1
1744 },
1745 {
1746 "puzzle": "10 10 11 12",
1747 "solutions": [
1748 "10\/10+12+11"
1749 ],
1750 "complexity": 3
1751 },
1752 {
1753 "puzzle": "3 3 3 6",
1754 "solutions": [
1755 "6*3+3+3",
1756 "(3+3)*3+6",
1757 "(3\/3+3)*6",
1758 "(6+3)*3-3"
1759 ],
1760 "complexity": 2
1761 },
1762 {
1763 "puzzle": "8 8 11 12",
1764 "solutions": [
1765 "8\/8+12+11"
1766 ],
1767 "complexity": 3
1768 },
1769 {
1770 "puzzle": "11 12 13 13",
1771 "solutions": [
1772 "13\/13+12+11",
1773 "(13+11)*(13-12)"
1774 ],
1775 "complexity": 2
1776 },
1777 {
1778 "puzzle": "1 2 3 8",
1779 "solutions": [
1780 "(2-1)*8*3",
1781 "(8-2)*(3+1)",
1782 "(8+3+1)*2"
1783 ],
1784 "complexity": 2
1785 },
1786 {
1787 "puzzle": "1 4 7 8",
1788 "solutions": [
1789 "8*4-7-1",
1790 "(7+1)*4-8",
1791 "(7-1)*(8-4)",
1792 "(7-4)*8*1"
1793 ],
1794 "complexity": 2
1795 },
1796 {
1797 "puzzle": "1 10 12 12",
1798 "solutions": [
1799 "(12-10)*12*1"
1800 ],
1801 "complexity": 2
1802 },
1803 {
1804 "puzzle": "5 5 5 6",
1805 "solutions": [
1806 "5*5+5-6",
1807 "(5-5\/5)*6"
1808 ],
1809 "complexity": 2
1810 },
1811 {
1812 "puzzle": "1 2 2 8",
1813 "solutions": [
1814 "(2+2-1)*8",
1815 "(2*2-1)*8"
1816 ],
1817 "complexity": 2
1818 },
1819 {
1820 "puzzle": "1 4 6 8",
1821 "solutions": [
1822 "(6+1-4)*8",
1823 "(8-4)*6*1"
1824 ],
1825 "complexity": 2
1826 },
1827 {
1828 "puzzle": "2 2 4 5",
1829 "solutions": [
1830 "5*4+2+2",
1831 "(2+2)*5+4",
1832 "5*4+2*2",
1833 "5*2*2+4",
1834 "(2\/2+5)*4",
1835 "(5-2)*4*2"
1836 ],
1837 "complexity": 2
1838 },
1839 {
1840 "puzzle": "3 11 11 12",
1841 "solutions": [
1842 "(3-11\/11)*12"
1843 ],
1844 "complexity": 3
1845 },
1846 {
1847 "puzzle": "1 2 13 13",
1848 "solutions": [
1849 "(13+13-2)*1"
1850 ],
1851 "complexity": 2
1852 },
1853 {
1854 "puzzle": "1 1 5 7",
1855 "solutions": [
1856 "(7+5)*(1+1)",
1857 "(7-1)*(5-1)"
1858 ],
1859 "complexity": 2
1860 },
1861 {
1862 "puzzle": "1 4 8 8",
1863 "solutions": [
1864 "(8-4-1)*8",
1865 "(8*4-8)*1",
1866 "(8\/4+1)*8"
1867 ],
1868 "complexity": 2
1869 },
1870 {
1871 "puzzle": "1 8 10 13",
1872 "solutions": [
1873 "(13-10)*8*1",
1874 "(13-1)*(10-8)"
1875 ],
1876 "complexity": 2
1877 },
1878 {
1879 "puzzle": "4 4 10 13",
1880 "solutions": [
1881 "(4+4)*(13-10)",
1882 "4\/4+13+10"
1883 ],
1884 "complexity": 2
1885 },
1886 {
1887 "puzzle": "7 7 12 13",
1888 "solutions": [
1889 "7*7-13-12",
1890 "13+12-7\/7"
1891 ],
1892 "complexity": 2
1893 },
1894 {
1895 "puzzle": "1 5 10 10",
1896 "solutions": [
1897 "10+10+5-1"
1898 ],
1899 "complexity": 1
1900 },
1901 {
1902 "puzzle": "4 6 12 13",
1903 "solutions": [
1904 "(13-12)*6*4"
1905 ],
1906 "complexity": 2
1907 },
1908 {
1909 "puzzle": "1 2 3 12",
1910 "solutions": [
1911 "(3+1-2)*12",
1912 "(3+1)*12\/2"
1913 ],
1914 "complexity": 2
1915 },
1916 {
1917 "puzzle": "2 7 8 12",
1918 "solutions": [
1919 "(12-7-2)*8",
1920 "(8-7)*12*2"
1921 ],
1922 "complexity": 2
1923 },
1924 {
1925 "puzzle": "1 4 12 12",
1926 "solutions": [
1927 "(4-1)*12-12",
1928 "(12\/4-1)*12"
1929 ],
1930 "complexity": 2
1931 },
1932 {
1933 "puzzle": "4 4 5 6",
1934 "solutions": [
1935 "(5-4\/4)*6",
1936 "(5-4)*6*4"
1937 ],
1938 "complexity": 2
1939 },
1940 {
1941 "puzzle": "7 9 11 11",
1942 "solutions": [
1943 "11+11+9-7"
1944 ],
1945 "complexity": 1
1946 },
1947 {
1948 "puzzle": "1 3 8 9",
1949 "solutions": [
1950 "9*8*1\/3"
1951 ],
1952 "complexity": 3
1953 },
1954 {
1955 "puzzle": "6 7 11 12",
1956 "solutions": [
1957 "(7+6-11)*12",
1958 "12+11+7-6",
1959 "(12-6)*(11-7)"
1960 ],
1961 "complexity": 1
1962 },
1963 {
1964 "puzzle": "1 2 10 11",
1965 "solutions": [
1966 "11+10+2+1"
1967 ],
1968 "complexity": 1
1969 },
1970 {
1971 "puzzle": "1 3 11 11",
1972 "solutions": [
1973 "11+11+3-1"
1974 ],
1975 "complexity": 1
1976 },
1977 {
1978 "puzzle": "2 2 2 8",
1979 "solutions": [
1980 "(8-2)*(2+2)",
1981 "(8+2+2)*2",
1982 "(8-2)*2*2",
1983 "(2*2+8)*2",
1984 "(2\/2+2)*8"
1985 ],
1986 "complexity": 2
1987 },
1988 {
1989 "puzzle": "2 12 12 13",
1990 "solutions": [
1991 "(13-12)*12*2",
1992 "(13-12\/12)*2"
1993 ],
1994 "complexity": 2
1995 },
1996 {
1997 "puzzle": "1 4 4 5",
1998 "solutions": [
1999 "(5*4+4)*1"
2000 ],
2001 "complexity": 2
2002 },
2003 {
2004 "puzzle": "1 5 8 9",
2005 "solutions": [
2006 "(9-5-1)*8",
2007 "(9-1)*(8-5)"
2008 ],
2009 "complexity": 2
2010 },
2011 {
2012 "puzzle": "9 9 12 13",
2013 "solutions": [
2014 "13+12-9\/9",
2015 "(13-9)*9-12"
2016 ],
2017 "complexity": 2
2018 },
2019 {
2020 "puzzle": "1 5 7 8",
2021 "solutions": [
2022 "(7+1-5)*8",
2023 "(7+1)*(8-5)"
2024 ],
2025 "complexity": 2
2026 },
2027 {
2028 "puzzle": "4 8 9 9",
2029 "solutions": [
2030 "(4-9\/9)*8"
2031 ],
2032 "complexity": 3
2033 },
2034 {
2035 "puzzle": "2 12 12 12",
2036 "solutions": [
2037 "12*2+12-12",
2038 "(12+12)\/2+12"
2039 ],
2040 "complexity": 2
2041 },
2042 {
2043 "puzzle": "2 11 13 13",
2044 "solutions": [
2045 "13*2+11-13",
2046 "(13-11)*13-2",
2047 "(13+13)\/2+11",
2048 "(13\/13+11)*2"
2049 ],
2050 "complexity": 2
2051 },
2052 {
2053 "puzzle": "3 6 7 8",
2054 "solutions": [
2055 "8+7+6+3",
2056 "(8+3-7)*6",
2057 "(7-6)*8*3"
2058 ],
2059 "complexity": 1
2060 },
2061 {
2062 "puzzle": "1 2 12 12",
2063 "solutions": [
2064 "(2+1)*12-12",
2065 "(12+12)*(2-1)"
2066 ],
2067 "complexity": 2
2068 },
2069 {
2070 "puzzle": "8 8 8 10",
2071 "solutions": [
2072 "(10-8)*8+8"
2073 ],
2074 "complexity": 2
2075 },
2076 {
2077 "puzzle": "1 8 8 9",
2078 "solutions": [
2079 "9+8+8-1"
2080 ],
2081 "complexity": 1
2082 },
2083 {
2084 "puzzle": "2 8 10 11",
2085 "solutions": [
2086 "(11+2-10)*8",
2087 "(10-2)*(11-8)",
2088 "10\/2+11+8",
2089 "11*2+10-8",
2090 "(10-8)*11+2"
2091 ],
2092 "complexity": 2
2093 },
2094 {
2095 "puzzle": "2 8 11 11",
2096 "solutions": [
2097 "(11\/11+2)*8"
2098 ],
2099 "complexity": 3
2100 },
2101 {
2102 "puzzle": "4 5 9 9",
2103 "solutions": [
2104 "(9\/9+5)*4"
2105 ],
2106 "complexity": 3
2107 },
2108 {
2109 "puzzle": "1 3 6 6",
2110 "solutions": [
2111 "(6+1-3)*6",
2112 "(6+6)*(3-1)",
2113 "(6*3+6)*1"
2114 ],
2115 "complexity": 2
2116 },
2117 {
2118 "puzzle": "1 6 6 13",
2119 "solutions": [
2120 "13+6+6-1",
2121 "6*6+1-13"
2122 ],
2123 "complexity": 1
2124 },
2125 {
2126 "puzzle": "1 6 7 11",
2127 "solutions": [
2128 "(11-7)*6*1",
2129 "(6-1)*7-11",
2130 "(11+7+6)*1"
2131 ],
2132 "complexity": 2
2133 },
2134 {
2135 "puzzle": "1 2 8 8",
2136 "solutions": [
2137 "(8*2+8)*1",
2138 "(8\/2-1)*8"
2139 ],
2140 "complexity": 2
2141 },
2142 {
2143 "puzzle": "3 6 10 11",
2144 "solutions": [
2145 "11+10+6-3",
2146 "(11+3-10)*6"
2147 ],
2148 "complexity": 1
2149 },
2150 {
2151 "puzzle": "3 7 9 9",
2152 "solutions": [
2153 "(9+3)*(9-7)",
2154 "(9*7+9)\/3",
2155 "(9\/9+7)*3"
2156 ],
2157 "complexity": 2
2158 },
2159 {
2160 "puzzle": "10 10 10 13",
2161 "solutions": [
2162 "10\/10+13+10"
2163 ],
2164 "complexity": 3
2165 },
2166 {
2167 "puzzle": "2 5 6 12",
2168 "solutions": [
2169 "12*6\/(5-2)",
2170 "12*5\/2-6",
2171 "(5-6\/2)*12",
2172 "(6-5)*12*2",
2173 "6*5-12\/2"
2174 ],
2175 "complexity": 2
2176 },
2177 {
2178 "puzzle": "1 3 3 7",
2179 "solutions": [
2180 "(7*3+3)*1"
2181 ],
2182 "complexity": 2
2183 },
2184 {
2185 "puzzle": "2 6 6 12",
2186 "solutions": [
2187 "(12-6-2)*6",
2188 "(12-6)*(6-2)",
2189 "12*2+6-6",
2190 "(6*6+12)\/2",
2191 "(12\/6+2)*6"
2192 ],
2193 "complexity": 2
2194 },
2195 {
2196 "puzzle": "4 5 13 13",
2197 "solutions": [
2198 "(13\/13+5)*4"
2199 ],
2200 "complexity": 3
2201 },
2202 {
2203 "puzzle": "6 6 11 12",
2204 "solutions": [
2205 "6\/6+12+11"
2206 ],
2207 "complexity": 3
2208 },
2209 {
2210 "puzzle": "1 6 9 9",
2211 "solutions": [
2212 "(9-1)*(9-6)",
2213 "(9+9+6)*1"
2214 ],
2215 "complexity": 2
2216 },
2217 {
2218 "puzzle": "3 12 13 13",
2219 "solutions": [
2220 "(3-13\/13)*12"
2221 ],
2222 "complexity": 3
2223 },
2224 {
2225 "puzzle": "4 4 4 4",
2226 "solutions": [
2227 "4*4+4+4"
2228 ],
2229 "complexity": 2
2230 },
2231 {
2232 "puzzle": "1 3 5 8",
2233 "solutions": [
2234 "(5+1-3)*8",
2235 "5*3+8+1",
2236 "(8-3)*5-1"
2237 ],
2238 "complexity": 2
2239 },
2240 {
2241 "puzzle": "2 3 11 13",
2242 "solutions": [
2243 "(13+11)*(3-2)"
2244 ],
2245 "complexity": 2
2246 },
2247 {
2248 "puzzle": "1 1 3 11",
2249 "solutions": [
2250 "(11+1)*(3-1)"
2251 ],
2252 "complexity": 2
2253 },
2254 {
2255 "puzzle": "1 2 4 6",
2256 "solutions": [
2257 "(2-1)*6*4",
2258 "(6+2)*(4-1)"
2259 ],
2260 "complexity": 2
2261 },
2262 {
2263 "puzzle": "6 10 10 10",
2264 "solutions": [
2265 "10+10+10-6"
2266 ],
2267 "complexity": 1
2268 },
2269 {
2270 "puzzle": "1 7 8 12",
2271 "solutions": [
2272 "(8+1-7)*12",
2273 "(7-1)*(12-8)"
2274 ],
2275 "complexity": 2
2276 },
2277 {
2278 "puzzle": "1 9 12 12",
2279 "solutions": [
2280 "(12-9-1)*12"
2281 ],
2282 "complexity": 2
2283 },
2284 {
2285 "puzzle": "10 11 11 13",
2286 "solutions": [
2287 "(13+11)*(11-10)",
2288 "11\/11+13+10"
2289 ],
2290 "complexity": 2
2291 },
2292 {
2293 "puzzle": "1 4 4 7",
2294 "solutions": [
2295 "4*4+7+1",
2296 "(7*4-4)*1"
2297 ],
2298 "complexity": 2
2299 },
2300 {
2301 "puzzle": "2 2 2 11",
2302 "solutions": [
2303 "(2\/2+11)*2",
2304 "(11+2)*2-2"
2305 ],
2306 "complexity": 2
2307 },
2308 {
2309 "puzzle": "4 5 6 6",
2310 "solutions": [
2311 "(6-5)*6*4",
2312 "(6\/6+5)*4"
2313 ],
2314 "complexity": 2
2315 },
2316 {
2317 "puzzle": "1 4 6 13",
2318 "solutions": [
2319 "13+6+4+1",
2320 "(13-6-1)*4",
2321 "(13-1)*(6-4)"
2322 ],
2323 "complexity": 1
2324 },
2325 {
2326 "puzzle": "4 6 7 8",
2327 "solutions": [
2328 "(6+4-7)*8",
2329 "(8-7)*6*4"
2330 ],
2331 "complexity": 2
2332 },
2333 {
2334 "puzzle": "12 13 13 13",
2335 "solutions": [
2336 "13+12-13\/13",
2337 "(13+13)*12\/13"
2338 ],
2339 "complexity": 3
2340 },
2341 {
2342 "puzzle": "1 3 3 5",
2343 "solutions": [
2344 "(5+3)*3*1",
2345 "(3+3)*(5-1)"
2346 ],
2347 "complexity": 2
2348 },
2349 {
2350 "puzzle": "2 4 5 12",
2351 "solutions": [
2352 "(12-4)*(5-2)",
2353 "(5-2)*4+12",
2354 "(5-4)*12*2"
2355 ],
2356 "complexity": 2
2357 },
2358 {
2359 "puzzle": "3 4 5 8",
2360 "solutions": [
2361 "8*4-5-3",
2362 "(5+3)*4-8",
2363 "(8+3-5)*4",
2364 "(8+4)*(5-3)",
2365 "(5-4)*8*3",
2366 "(5+4)*8\/3"
2367 ],
2368 "complexity": 2
2369 },
2370 {
2371 "puzzle": "3 5 11 11",
2372 "solutions": [
2373 "11+11+5-3"
2374 ],
2375 "complexity": 1
2376 },
2377 {
2378 "puzzle": "1 4 7 13",
2379 "solutions": [
2380 "(13-7)*4*1",
2381 "(13+7+4)*1"
2382 ],
2383 "complexity": 2
2384 },
2385 {
2386 "puzzle": "1 5 8 10",
2387 "solutions": [
2388 "10+8+5+1",
2389 "(10\/5+1)*8"
2390 ],
2391 "complexity": 1
2392 },
2393 {
2394 "puzzle": "3 9 9 12",
2395 "solutions": [
2396 "9*3+9-12",
2397 "9\/3+12+9",
2398 "(3-9\/9)*12",
2399 "(12-9)*9-3"
2400 ],
2401 "complexity": 2
2402 },
2403 {
2404 "puzzle": "1 5 10 12",
2405 "solutions": [
2406 "12*10*1\/5"
2407 ],
2408 "complexity": 3
2409 },
2410 {
2411 "puzzle": "1 6 8 10",
2412 "solutions": [
2413 "(10-6-1)*8",
2414 "(10+8+6)*1"
2415 ],
2416 "complexity": 2
2417 },
2418 {
2419 "puzzle": "2 3 4 6",
2420 "solutions": [
2421 "(3-2)*6*4",
2422 "6*3+4+2",
2423 "(4+2)*3+6",
2424 "(6-3)*4*2",
2425 "(6+4-2)*3",
2426 "(4\/2+6)*3",
2427 "6*2+4*3",
2428 "(6*2-4)*3",
2429 "(6\/2+3)*4"
2430 ],
2431 "complexity": 2
2432 },
2433 {
2434 "puzzle": "2 8 8 13",
2435 "solutions": [
2436 "(13-8-2)*8",
2437 "(8*2-13)*8",
2438 "(13-8\/8)*2"
2439 ],
2440 "complexity": 2
2441 },
2442 {
2443 "puzzle": "2 10 11 12",
2444 "solutions": [
2445 "11*2+12-10",
2446 "(11-10)*12*2",
2447 "(12-10)*11+2"
2448 ],
2449 "complexity": 2
2450 },
2451 {
2452 "puzzle": "3 7 11 11",
2453 "solutions": [
2454 "(11\/11+7)*3"
2455 ],
2456 "complexity": 3
2457 },
2458 {
2459 "puzzle": "3 7 13 13",
2460 "solutions": [
2461 "(13\/13+7)*3"
2462 ],
2463 "complexity": 3
2464 },
2465 {
2466 "puzzle": "5 6 6 7",
2467 "solutions": [
2468 "7+6+6+5",
2469 "(6+5-7)*6",
2470 "6*6-7-5",
2471 "(6+6)*(7-5)"
2472 ],
2473 "complexity": 1
2474 },
2475 {
2476 "puzzle": "1 2 5 6",
2477 "solutions": [
2478 "(5+1-2)*6",
2479 "(5+1)*(6-2)",
2480 "(6+5+1)*2"
2481 ],
2482 "complexity": 2
2483 },
2484 {
2485 "puzzle": "1 7 7 11",
2486 "solutions": [
2487 "11+7+7-1",
2488 "(7-1)*(11-7)"
2489 ],
2490 "complexity": 1
2491 },
2492 {
2493 "puzzle": "3 10 10 12",
2494 "solutions": [
2495 "12\/3+10+10",
2496 "(10+10-12)*3",
2497 "(3-10\/10)*12"
2498 ],
2499 "complexity": 2
2500 },
2501 {
2502 "puzzle": "4 6 11 12",
2503 "solutions": [
2504 "(12-11)*6*4"
2505 ],
2506 "complexity": 2
2507 },
2508 {
2509 "puzzle": "7 8 11 12",
2510 "solutions": [
2511 "12+11+8-7",
2512 "12*8\/(11-7)"
2513 ],
2514 "complexity": 1
2515 },
2516 {
2517 "puzzle": "4 6 12 12",
2518 "solutions": [
2519 "(12-6-4)*12",
2520 "6*4+12-12",
2521 "12*6-12*4",
2522 "(4-12\/6)*12"
2523 ],
2524 "complexity": 2
2525 },
2526 {
2527 "puzzle": "3 7 7 12",
2528 "solutions": [
2529 "(3-7\/7)*12"
2530 ],
2531 "complexity": 3
2532 },
2533 {
2534 "puzzle": "1 3 3 9",
2535 "solutions": [
2536 "(9-3)*(3+1)",
2537 "(9+3)*(3-1)",
2538 "(9*3-3)*1"
2539 ],
2540 "complexity": 2
2541 },
2542 {
2543 "puzzle": "1 3 13 13",
2544 "solutions": [
2545 "13+13+1-3"
2546 ],
2547 "complexity": 1
2548 },
2549 {
2550 "puzzle": "2 2 8 12",
2551 "solutions": [
2552 "12+8+2+2",
2553 "12*8\/(2+2)",
2554 "12*8\/2\/2",
2555 "2*2+12+8",
2556 "(8-2)*2+12",
2557 "(8\/2-2)*12"
2558 ],
2559 "complexity": 1
2560 },
2561 {
2562 "puzzle": "1 10 11 12",
2563 "solutions": [
2564 "(11+1-10)*12",
2565 "(11+1)*(12-10)"
2566 ],
2567 "complexity": 2
2568 },
2569 {
2570 "puzzle": "3 6 6 7",
2571 "solutions": [
2572 "7*6-6*3",
2573 "(7+3-6)*6",
2574 "(6\/6+7)*3"
2575 ],
2576 "complexity": 2
2577 },
2578 {
2579 "puzzle": "4 4 12 13",
2580 "solutions": [
2581 "13+12-4\/4",
2582 "(13-4)*4-12"
2583 ],
2584 "complexity": 2
2585 },
2586 {
2587 "puzzle": "1 2 10 13",
2588 "solutions": [
2589 "13+10+2-1"
2590 ],
2591 "complexity": 1
2592 },
2593 {
2594 "puzzle": "3 8 9 10",
2595 "solutions": [
2596 "(10-9)*8*3",
2597 "10+9+8-3",
2598 "(9+3)*(10-8)"
2599 ],
2600 "complexity": 1
2601 },
2602 {
2603 "puzzle": "2 5 6 11",
2604 "solutions": [
2605 "11+6+5+2",
2606 "(11-5-2)*6",
2607 "(11-5)*(6-2)",
2608 "(11+6-5)*2"
2609 ],
2610 "complexity": 1
2611 },
2612 {
2613 "puzzle": "2 8 9 12",
2614 "solutions": [
2615 "9*8\/2-12",
2616 "(9-8)*12*2",
2617 "(9-12\/2)*8"
2618 ],
2619 "complexity": 2
2620 },
2621 {
2622 "puzzle": "3 3 3 3",
2623 "solutions": [
2624 "3*3*3-3"
2625 ],
2626 "complexity": 2
2627 },
2628 {
2629 "puzzle": "1 2 3 6",
2630 "solutions": [
2631 "(3+2-1)*6",
2632 "(6+2)*3*1",
2633 "(3-1)*6*2"
2634 ],
2635 "complexity": 2
2636 },
2637 {
2638 "puzzle": "1 2 5 5",
2639 "solutions": [
2640 "5*5+1-2"
2641 ],
2642 "complexity": 2
2643 },
2644 {
2645 "puzzle": "1 3 3 3",
2646 "solutions": [
2647 "(3+3)*(3+1)",
2648 "(3*3-1)*3"
2649 ],
2650 "complexity": 2
2651 },
2652 {
2653 "puzzle": "1 9 11 12",
2654 "solutions": [
2655 "(11-9)*12*1"
2656 ],
2657 "complexity": 2
2658 },
2659 {
2660 "puzzle": "1 12 12 12",
2661 "solutions": [
2662 "(12\/12+1)*12"
2663 ],
2664 "complexity": 3
2665 },
2666 {
2667 "puzzle": "5 6 7 7",
2668 "solutions": [
2669 "(5-7\/7)*6"
2670 ],
2671 "complexity": 3
2672 },
2673 {
2674 "puzzle": "9 9 10 13",
2675 "solutions": [
2676 "9\/9+13+10"
2677 ],
2678 "complexity": 3
2679 },
2680 {
2681 "puzzle": "2 2 5 5",
2682 "solutions": [
2683 "5*5-2\/2",
2684 "(5+5+2)*2"
2685 ],
2686 "complexity": 2
2687 },
2688 {
2689 "puzzle": "1 4 8 13",
2690 "solutions": [
2691 "13+8+4-1",
2692 "(13+1-8)*4",
2693 "(13-1)*8\/4"
2694 ],
2695 "complexity": 1
2696 },
2697 {
2698 "puzzle": "4 4 5 5",
2699 "solutions": [
2700 "5*5-4\/4",
2701 "(5+5-4)*4"
2702 ],
2703 "complexity": 2
2704 },
2705 {
2706 "puzzle": "5 7 10 12",
2707 "solutions": [
2708 "(7+5)*(12-10)",
2709 "(7+5-10)*12",
2710 "12+10+7-5"
2711 ],
2712 "complexity": 1
2713 },
2714 {
2715 "puzzle": "6 7 12 13",
2716 "solutions": [
2717 "13+12+6-7",
2718 "(13-7)*6-12"
2719 ],
2720 "complexity": 1
2721 },
2722 {
2723 "puzzle": "1 1 2 7",
2724 "solutions": [
2725 "(7+1)*(2+1)"
2726 ],
2727 "complexity": 2
2728 },
2729 {
2730 "puzzle": "3 4 10 13",
2731 "solutions": [
2732 "13+10+4-3",
2733 "(13+3-10)*4",
2734 "10*4-13-3"
2735 ],
2736 "complexity": 1
2737 },
2738 {
2739 "puzzle": "4 5 11 11",
2740 "solutions": [
2741 "(11-4)*5-11",
2742 "(11\/11+5)*4"
2743 ],
2744 "complexity": 2
2745 },
2746 {
2747 "puzzle": "3 3 5 6",
2748 "solutions": [
2749 "6*5-3-3",
2750 "(3+3)*5-6",
2751 "(3*3-5)*6",
2752 "(5-3\/3)*6",
2753 "(5+3)*(6-3)",
2754 "5*3+6+3",
2755 "(6+5-3)*3"
2756 ],
2757 "complexity": 2
2758 },
2759 {
2760 "puzzle": "6 8 10 12",
2761 "solutions": [
2762 "8*6\/(12-10)",
2763 "12+10+8-6",
2764 "(10+6)*12\/8",
2765 "12*8\/(10-6)",
2766 "(10-8)*6+12"
2767 ],
2768 "complexity": 1
2769 },
2770 {
2771 "puzzle": "1 5 6 6",
2772 "solutions": [
2773 "(6*5-6)*1"
2774 ],
2775 "complexity": 2
2776 },
2777 {
2778 "puzzle": "1 2 5 7",
2779 "solutions": [
2780 "(7+5)*2*1",
2781 "(7+1)*(5-2)",
2782 "(7-2)*5-1"
2783 ],
2784 "complexity": 2
2785 },
2786 {
2787 "puzzle": "1 1 6 12",
2788 "solutions": [
2789 "(1+1)*6+12"
2790 ],
2791 "complexity": 2
2792 },
2793 {
2794 "puzzle": "2 2 2 13",
2795 "solutions": [
2796 "(13-2\/2)*2",
2797 "(13-2)*2+2"
2798 ],
2799 "complexity": 2
2800 },
2801 {
2802 "puzzle": "1 2 11 13",
2803 "solutions": [
2804 "(13+11)*(2-1)"
2805 ],
2806 "complexity": 2
2807 },
2808 {
2809 "puzzle": "1 6 6 10",
2810 "solutions": [
2811 "(10-6)*6*1"
2812 ],
2813 "complexity": 2
2814 },
2815 {
2816 "puzzle": "2 2 2 4",
2817 "solutions": [
2818 "(4+2)*(2+2)",
2819 "(2+2+2)*4",
2820 "(4+2)*2*2",
2821 "(2*2+2)*4"
2822 ],
2823 "complexity": 2
2824 },
2825 {
2826 "puzzle": "2 3 12 13",
2827 "solutions": [
2828 "13+12+2-3"
2829 ],
2830 "complexity": 1
2831 },
2832 {
2833 "puzzle": "3 3 12 13",
2834 "solutions": [
2835 "13+12-3\/3",
2836 "13*3-12-3"
2837 ],
2838 "complexity": 2
2839 },
2840 {
2841 "puzzle": "4 5 7 7",
2842 "solutions": [
2843 "7*5-7-4",
2844 "(7\/7+5)*4"
2845 ],
2846 "complexity": 2
2847 },
2848 {
2849 "puzzle": "7 7 10 13",
2850 "solutions": [
2851 "7\/7+13+10"
2852 ],
2853 "complexity": 3
2854 },
2855 {
2856 "puzzle": "1 1 2 9",
2857 "solutions": [
2858 "(9-1)*(2+1)"
2859 ],
2860 "complexity": 2
2861 },
2862 {
2863 "puzzle": "5 7 11 11",
2864 "solutions": [
2865 "11+11+7-5",
2866 "(11-5)*(11-7)"
2867 ],
2868 "complexity": 1
2869 },
2870 {
2871 "puzzle": "2 11 11 13",
2872 "solutions": [
2873 "11*2+13-11",
2874 "(11+11)\/2+13",
2875 "(13-11\/11)*2",
2876 "(13-11)*11+2"
2877 ],
2878 "complexity": 2
2879 },
2880 {
2881 "puzzle": "3 4 5 7",
2882 "solutions": [
2883 "4*3+7+5",
2884 "(7-5)*4*3",
2885 "(5+3)*(7-4)",
2886 "5*4+7-3",
2887 "(7-3)*5+4",
2888 "(7+5-4)*3"
2889 ],
2890 "complexity": 2
2891 },
2892 {
2893 "puzzle": "8 9 11 12",
2894 "solutions": [
2895 "12+11+9-8"
2896 ],
2897 "complexity": 1
2898 },
2899 {
2900 "puzzle": "4 8 8 8",
2901 "solutions": [
2902 "(8-4)*8-8",
2903 "8*8\/4+8",
2904 "(4-8\/8)*8"
2905 ],
2906 "complexity": 2
2907 },
2908 {
2909 "puzzle": "11 12 12 13",
2910 "solutions": [
2911 "13+12+11-12",
2912 "13*12-12*11"
2913 ],
2914 "complexity": 1
2915 },
2916 {
2917 "puzzle": "1 6 8 11",
2918 "solutions": [
2919 "11+8+6-1",
2920 "(11+1-8)*6",
2921 "(11+1)*(8-6)"
2922 ],
2923 "complexity": 1
2924 },
2925 {
2926 "puzzle": "2 4 4 8",
2927 "solutions": [
2928 "(4+2)*(8-4)",
2929 "8*4-4*2",
2930 "4*4*2-8",
2931 "(8+2-4)*4",
2932 "(8+4)*(4-2)",
2933 "(8+4)*4\/2",
2934 "(8-4\/2)*4",
2935 "8*2+4+4",
2936 "(4+4)*2+8",
2937 "(4\/4+2)*8"
2938 ],
2939 "complexity": 2
2940 },
2941 {
2942 "puzzle": "4 7 7 7",
2943 "solutions": [
2944 "(7-7\/7)*4"
2945 ],
2946 "complexity": 3
2947 },
2948 {
2949 "puzzle": "2 6 6 8",
2950 "solutions": [
2951 "(8-6)*6*2",
2952 "(6*2-8)*6",
2953 "(8+2-6)*6",
2954 "(6-6\/2)*8",
2955 "(6\/6+2)*8"
2956 ],
2957 "complexity": 2
2958 },
2959 {
2960 "puzzle": "4 4 4 8",
2961 "solutions": [
2962 "8*4-4-4",
2963 "(4+4)*4-8",
2964 "(4-4\/4)*8",
2965 "(8\/4+4)*4"
2966 ],
2967 "complexity": 2
2968 },
2969 {
2970 "puzzle": "5 6 13 13",
2971 "solutions": [
2972 "(5-13\/13)*6"
2973 ],
2974 "complexity": 3
2975 },
2976 {
2977 "puzzle": "7 8 12 13",
2978 "solutions": [
2979 "(8+7-13)*12",
2980 "13+12+7-8",
2981 "(13-7)*(12-8)"
2982 ],
2983 "complexity": 1
2984 },
2985 {
2986 "puzzle": "2 4 13 13",
2987 "solutions": [
2988 "13+13+2-4",
2989 "13+13-4\/2"
2990 ],
2991 "complexity": 1
2992 },
2993 {
2994 "puzzle": "7 9 13 13",
2995 "solutions": [
2996 "13+13+7-9",
2997 "(13-7)*(13-9)"
2998 ],
2999 "complexity": 1
3000 },
3001 {
3002 "puzzle": "9 11 11 11",
3003 "solutions": [
3004 "11+11+11-9"
3005 ],
3006 "complexity": 1
3007 },
3008 {
3009 "puzzle": "1 9 10 12",
3010 "solutions": [
3011 "(10+1-9)*12"
3012 ],
3013 "complexity": 2
3014 },
3015 {
3016 "puzzle": "1 3 4 4",
3017 "solutions": [
3018 "(4+4)*3*1",
3019 "(4+3-1)*4"
3020 ],
3021 "complexity": 2
3022 },
3023 {
3024 "puzzle": "4 7 13 13",
3025 "solutions": [
3026 "(7-13\/13)*4"
3027 ],
3028 "complexity": 3
3029 },
3030 {
3031 "puzzle": "1 1 3 5",
3032 "solutions": [
3033 "(5+1)*(3+1)"
3034 ],
3035 "complexity": 2
3036 },
3037 {
3038 "puzzle": "1 1 4 9",
3039 "solutions": [
3040 "(9-1)*(4-1)"
3041 ],
3042 "complexity": 2
3043 },
3044 {
3045 "puzzle": "6 9 12 12",
3046 "solutions": [
3047 "(9-6)*12-12",
3048 "(12+6)*12\/9",
3049 "12*6\/(12-9)"
3050 ],
3051 "complexity": 2
3052 },
3053 {
3054 "puzzle": "1 3 6 7",
3055 "solutions": [
3056 "(7-3)*6*1",
3057 "(7+1)*(6-3)",
3058 "6*3+7-1",
3059 "(7-1)*3+6"
3060 ],
3061 "complexity": 2
3062 },
3063 {
3064 "puzzle": "1 3 10 11",
3065 "solutions": [
3066 "11*3+1-10",
3067 "(11+10+3)*1"
3068 ],
3069 "complexity": 2
3070 },
3071 {
3072 "puzzle": "4 7 10 11",
3073 "solutions": [
3074 "11+10+7-4",
3075 "(10-4)*(11-7)",
3076 "(10+7-11)*4"
3077 ],
3078 "complexity": 1
3079 },
3080 {
3081 "puzzle": "8 9 10 13",
3082 "solutions": [
3083 "9*8\/(13-10)",
3084 "13+10+9-8"
3085 ],
3086 "complexity": 1
3087 },
3088 {
3089 "puzzle": "1 2 2 11",
3090 "solutions": [
3091 "(11+2-1)*2",
3092 "(11*2+2)*1"
3093 ],
3094 "complexity": 2
3095 },
3096 {
3097 "puzzle": "1 11 12 12",
3098 "solutions": [
3099 "(12+1-11)*12"
3100 ],
3101 "complexity": 2
3102 },
3103 {
3104 "puzzle": "2 5 5 13",
3105 "solutions": [
3106 "(13-5)*(5-2)",
3107 "(5*5-13)*2",
3108 "(13-5\/5)*2"
3109 ],
3110 "complexity": 2
3111 },
3112 {
3113 "puzzle": "9 10 11 12",
3114 "solutions": [
3115 "12+11+10-9",
3116 "(11+9)*12\/10"
3117 ],
3118 "complexity": 1
3119 },
3120 {
3121 "puzzle": "2 8 12 12",
3122 "solutions": [
3123 "(12-8-2)*12",
3124 "12*12\/(8-2)",
3125 "(12-8)*12\/2",
3126 "(8-12\/2)*12",
3127 "(12\/12+2)*8"
3128 ],
3129 "complexity": 2
3130 },
3131 {
3132 "puzzle": "3 3 3 7",
3133 "solutions": [
3134 "(3+3)*(7-3)",
3135 "(3\/3+7)*3"
3136 ],
3137 "complexity": 2
3138 },
3139 {
3140 "puzzle": "4 6 9 10",
3141 "solutions": [
3142 "(10-9)*6*4",
3143 "10*6\/4+9",
3144 "10*6-9*4",
3145 "(10*9+6)\/4"
3146 ],
3147 "complexity": 2
3148 },
3149 {
3150 "puzzle": "5 5 10 10",
3151 "solutions": [
3152 "5*5-10\/10"
3153 ],
3154 "complexity": 3
3155 },
3156 {
3157 "puzzle": "6 8 11 11",
3158 "solutions": [
3159 "11+11+8-6"
3160 ],
3161 "complexity": 1
3162 },
3163 {
3164 "puzzle": "8 9 12 13",
3165 "solutions": [
3166 "13+12+8-9",
3167 "12*8\/(13-9)"
3168 ],
3169 "complexity": 1
3170 },
3171 {
3172 "puzzle": "1 2 11 12",
3173 "solutions": [
3174 "12+11+2-1"
3175 ],
3176 "complexity": 1
3177 },
3178 {
3179 "puzzle": "2 5 12 12",
3180 "solutions": [
3181 "(12-5*2)*12",
3182 "(5-2)*12-12",
3183 "(12-2)*12\/5",
3184 "(12*5-12)\/2"
3185 ],
3186 "complexity": 2
3187 },
3188 {
3189 "puzzle": "2 5 5 8",
3190 "solutions": [
3191 "(5\/5+2)*8"
3192 ],
3193 "complexity": 3
3194 },
3195 {
3196 "puzzle": "2 6 10 12",
3197 "solutions": [
3198 "(10-6-2)*12",
3199 "(12-10)*6*2",
3200 "(6*2-10)*12",
3201 "(10+2)*12\/6",
3202 "(12+2-10)*6",
3203 "(10-6)*12\/2",
3204 "(10-12\/2)*6",
3205 "(10*6-12)\/2",
3206 "(12\/6+10)*2"
3207 ],
3208 "complexity": 2
3209 },
3210 {
3211 "puzzle": "3 3 3 10",
3212 "solutions": [
3213 "10*3-3-3",
3214 "(10-3)*3+3"
3215 ],
3216 "complexity": 2
3217 },
3218 {
3219 "puzzle": "4 5 10 10",
3220 "solutions": [
3221 "10*10\/5+4",
3222 "(10\/10+5)*4"
3223 ],
3224 "complexity": 3
3225 },
3226 {
3227 "puzzle": "2 4 5 8",
3228 "solutions": [
3229 "(8-5)*4*2",
3230 "(4*2-5)*8",
3231 "(5+2-4)*8",
3232 "(5-4\/2)*8",
3233 "8*5\/2+4",
3234 "5*4+8\/2",
3235 "(5*4-8)*2"
3236 ],
3237 "complexity": 2
3238 },
3239 {
3240 "puzzle": "4 7 8 8",
3241 "solutions": [
3242 "(7+4-8)*8",
3243 "8*7-8*4",
3244 "(7-8\/8)*4"
3245 ],
3246 "complexity": 2
3247 },
3248 {
3249 "puzzle": "8 8 10 13",
3250 "solutions": [
3251 "8\/8+13+10",
3252 "13*8-10*8"
3253 ],
3254 "complexity": 2
3255 },
3256 {
3257 "puzzle": "3 8 8 9",
3258 "solutions": [
3259 "(9-8)*8*3",
3260 "(9-8\/8)*3"
3261 ],
3262 "complexity": 2
3263 },
3264 {
3265 "puzzle": "1 1 8 8",
3266 "solutions": [
3267 "(1+1)*8+8"
3268 ],
3269 "complexity": 2
3270 },
3271 {
3272 "puzzle": "1 2 6 7",
3273 "solutions": [
3274 "(7-2-1)*6",
3275 "(7+6-1)*2",
3276 "(7+1)*6\/2",
3277 "(7-1)*(6-2)"
3278 ],
3279 "complexity": 2
3280 },
3281 {
3282 "puzzle": "2 9 9 11",
3283 "solutions": [
3284 "(9\/9+11)*2"
3285 ],
3286 "complexity": 3
3287 },
3288 {
3289 "puzzle": "2 6 7 13",
3290 "solutions": [
3291 "13+7+6-2",
3292 "(13-7)*(6-2)",
3293 "(13-7-2)*6",
3294 "(13+6-7)*2"
3295 ],
3296 "complexity": 1
3297 },
3298 {
3299 "puzzle": "11 11 12 13",
3300 "solutions": [
3301 "13+12-11\/11",
3302 "(13+11)*(12-11)"
3303 ],
3304 "complexity": 2
3305 },
3306 {
3307 "puzzle": "2 2 12 13",
3308 "solutions": [
3309 "13+12-2\/2"
3310 ],
3311 "complexity": 3
3312 },
3313 {
3314 "puzzle": "5 5 10 13",
3315 "solutions": [
3316 "5\/5+13+10"
3317 ],
3318 "complexity": 3
3319 },
3320 {
3321 "puzzle": "6 7 10 13",
3322 "solutions": [
3323 "13+10+7-6",
3324 "(13-7)*(10-6)",
3325 "(10+7-13)*6"
3326 ],
3327 "complexity": 1
3328 },
3329 {
3330 "puzzle": "4 4 4 12",
3331 "solutions": [
3332 "12+4+4+4",
3333 "(4+4)*12\/4",
3334 "4*4+12-4"
3335 ],
3336 "complexity": 1
3337 },
3338 {
3339 "puzzle": "5 6 9 9",
3340 "solutions": [
3341 "(9-6)*5+9",
3342 "(5-9\/9)*6"
3343 ],
3344 "complexity": 2
3345 },
3346 {
3347 "puzzle": "5 6 11 11",
3348 "solutions": [
3349 "(5-11\/11)*6"
3350 ],
3351 "complexity": 3
3352 },
3353 {
3354 "puzzle": "1 3 7 13",
3355 "solutions": [
3356 "13+7+3+1",
3357 "(13-7)*(3+1)"
3358 ],
3359 "complexity": 1
3360 },
3361 {
3362 "puzzle": "1 8 8 11",
3363 "solutions": [
3364 "(11-8)*8*1"
3365 ],
3366 "complexity": 2
3367 },
3368 {
3369 "puzzle": "6 8 8 8",
3370 "solutions": [
3371 "(8-6)*8+8"
3372 ],
3373 "complexity": 2
3374 },
3375 {
3376 "puzzle": "1 3 5 13",
3377 "solutions": [
3378 "(13-5)*3*1",
3379 "(13-1)*(5-3)"
3380 ],
3381 "complexity": 2
3382 },
3383 {
3384 "puzzle": "2 9 9 13",
3385 "solutions": [
3386 "(13-9\/9)*2"
3387 ],
3388 "complexity": 3
3389 },
3390 {
3391 "puzzle": "3 6 6 12",
3392 "solutions": [
3393 "6*3+12-6",
3394 "12*6\/(6-3)",
3395 "6*6\/3+12",
3396 "12*3-6-6",
3397 "(6+6)*3-12",
3398 "(3-6\/6)*12",
3399 "(12-6)*3+6",
3400 "(12\/6+6)*3"
3401 ],
3402 "complexity": 2
3403 },
3404 {
3405 "puzzle": "3 6 9 9",
3406 "solutions": [
3407 "9*3+6-9",
3408 "(9-6)*9-3",
3409 "(9\/9+3)*6"
3410 ],
3411 "complexity": 2
3412 },
3413 {
3414 "puzzle": "1 6 8 8",
3415 "solutions": [
3416 "(8+1-6)*8"
3417 ],
3418 "complexity": 2
3419 },
3420 {
3421 "puzzle": "5 5 13 13",
3422 "solutions": [
3423 "5*5-13\/13"
3424 ],
3425 "complexity": 3
3426 },
3427 {
3428 "puzzle": "9 12 12 12",
3429 "solutions": [
3430 "(12-9)*12-12"
3431 ],
3432 "complexity": 2
3433 },
3434 {
3435 "puzzle": "1 7 7 9",
3436 "solutions": [
3437 "9+7+7+1"
3438 ],
3439 "complexity": 1
3440 },
3441 {
3442 "puzzle": "1 8 8 10",
3443 "solutions": [
3444 "(10+1-8)*8"
3445 ],
3446 "complexity": 2
3447 },
3448 {
3449 "puzzle": "2 6 7 12",
3450 "solutions": [
3451 "(7-6)*12*2"
3452 ],
3453 "complexity": 2
3454 },
3455 {
3456 "puzzle": "8 8 9 11",
3457 "solutions": [
3458 "9*8\/(11-8)",
3459 "(11-9)*8+8"
3460 ],
3461 "complexity": 2
3462 },
3463 {
3464 "puzzle": "2 3 5 5",
3465 "solutions": [
3466 "5*5+2-3",
3467 "(5+5-2)*3",
3468 "(5+3)*(5-2)"
3469 ],
3470 "complexity": 2
3471 },
3472 {
3473 "puzzle": "3 7 12 13",
3474 "solutions": [
3475 "(13-7)*12\/3",
3476 "12\/3+13+7",
3477 "(13+7-12)*3"
3478 ],
3479 "complexity": 2
3480 },
3481 {
3482 "puzzle": "2 3 3 13",
3483 "solutions": [
3484 "(13-3-2)*3",
3485 "(13+3)*3\/2",
3486 "3*3+13+2",
3487 "(13-3\/3)*2"
3488 ],
3489 "complexity": 2
3490 },
3491 {
3492 "puzzle": "8 8 12 13",
3493 "solutions": [
3494 "13+12-8\/8"
3495 ],
3496 "complexity": 3
3497 },
3498 {
3499 "puzzle": "8 10 11 11",
3500 "solutions": [
3501 "11+11+10-8"
3502 ],
3503 "complexity": 1
3504 },
3505 {
3506 "puzzle": "3 3 4 4",
3507 "solutions": [
3508 "4*3+4*3",
3509 "(4*3-4)*3"
3510 ],
3511 "complexity": 2
3512 },
3513 {
3514 "puzzle": "3 5 5 6",
3515 "solutions": [
3516 "(5+5)*3-6",
3517 "(5\/5+3)*6"
3518 ],
3519 "complexity": 2
3520 },
3521 {
3522 "puzzle": "5 5 6 6",
3523 "solutions": [
3524 "(5+5-6)*6",
3525 "5*5-6\/6"
3526 ],
3527 "complexity": 2
3528 },
3529 {
3530 "puzzle": "1 3 9 11",
3531 "solutions": [
3532 "11+9+3+1",
3533 "(11*3-9)*1"
3534 ],
3535 "complexity": 1
3536 },
3537 {
3538 "puzzle": "1 7 8 11",
3539 "solutions": [
3540 "(7+1)*(11-8)",
3541 "(11-7-1)*8"
3542 ],
3543 "complexity": 2
3544 },
3545 {
3546 "puzzle": "2 2 10 13",
3547 "solutions": [
3548 "2\/2+13+10"
3549 ],
3550 "complexity": 3
3551 },
3552 {
3553 "puzzle": "4 8 11 12",
3554 "solutions": [
3555 "(11+4-12)*8",
3556 "11*4-12-8",
3557 "(12-4)*(11-8)",
3558 "(11-8)*4+12"
3559 ],
3560 "complexity": 2
3561 },
3562 {
3563 "puzzle": "1 2 3 5",
3564 "solutions": [
3565 "(5+3)*(2+1)",
3566 "(5+2+1)*3",
3567 "(5-1)*3*2",
3568 "(3+2)*5-1"
3569 ],
3570 "complexity": 2
3571 },
3572 {
3573 "puzzle": "1 3 10 12",
3574 "solutions": [
3575 "12+10+3-1"
3576 ],
3577 "complexity": 1
3578 },
3579 {
3580 "puzzle": "1 2 2 13",
3581 "solutions": [
3582 "(13+1-2)*2",
3583 "(13*2-2)*1"
3584 ],
3585 "complexity": 2
3586 },
3587 {
3588 "puzzle": "2 5 9 12",
3589 "solutions": [
3590 "(9-5-2)*12",
3591 "12+9+5-2",
3592 "(9-5)*12\/2"
3593 ],
3594 "complexity": 1
3595 },
3596 {
3597 "puzzle": "5 5 11 11",
3598 "solutions": [
3599 "5*5-11\/11"
3600 ],
3601 "complexity": 3
3602 },
3603 {
3604 "puzzle": "1 2 7 10",
3605 "solutions": [
3606 "(7*2+10)*1"
3607 ],
3608 "complexity": 2
3609 },
3610 {
3611 "puzzle": "1 7 10 12",
3612 "solutions": [
3613 "(10-7-1)*12"
3614 ],
3615 "complexity": 2
3616 },
3617 {
3618 "puzzle": "10 10 12 13",
3619 "solutions": [
3620 "13+12-10\/10"
3621 ],
3622 "complexity": 3
3623 },
3624 {
3625 "puzzle": "3 4 11 12",
3626 "solutions": [
3627 "12+11+4-3",
3628 "(11-3)*12\/4",
3629 "(11-12\/4)*3"
3630 ],
3631 "complexity": 1
3632 },
3633 {
3634 "puzzle": "4 6 6 8",
3635 "solutions": [
3636 "8+6+6+4",
3637 "8*6-6*4",
3638 "8*6\/(6-4)",
3639 "6*6-8-4",
3640 "(6+6)*8\/4",
3641 "(6-8\/4)*6",
3642 "(4-6\/6)*8"
3643 ],
3644 "complexity": 1
3645 },
3646 {
3647 "puzzle": "1 5 6 9",
3648 "solutions": [
3649 "(9-5)*6*1"
3650 ],
3651 "complexity": 2
3652 },
3653 {
3654 "puzzle": "1 3 4 11",
3655 "solutions": [
3656 "(11+1-4)*3",
3657 "(11-3)*(4-1)",
3658 "4*3+11+1"
3659 ],
3660 "complexity": 2
3661 },
3662 {
3663 "puzzle": "2 6 10 10",
3664 "solutions": [
3665 "10+10+6-2",
3666 "10*2+10-6"
3667 ],
3668 "complexity": 1
3669 },
3670 {
3671 "puzzle": "1 10 12 13",
3672 "solutions": [
3673 "(13-10-1)*12",
3674 "(13-1)*(12-10)"
3675 ],
3676 "complexity": 2
3677 },
3678 {
3679 "puzzle": "2 7 7 13",
3680 "solutions": [
3681 "(13-7\/7)*2"
3682 ],
3683 "complexity": 3
3684 },
3685 {
3686 "puzzle": "3 8 8 12",
3687 "solutions": [
3688 "12*8\/3-8",
3689 "(3-8\/8)*12"
3690 ],
3691 "complexity": 3
3692 },
3693 {
3694 "puzzle": "6 6 6 11",
3695 "solutions": [
3696 "(11-6)*6-6"
3697 ],
3698 "complexity": 2
3699 },
3700 {
3701 "puzzle": "1 2 4 10",
3702 "solutions": [
3703 "(10-2)*(4-1)",
3704 "(10*2+4)*1",
3705 "(10\/2+1)*4"
3706 ],
3707 "complexity": 2
3708 },
3709 {
3710 "puzzle": "2 8 8 8",
3711 "solutions": [
3712 "8*8\/2-8",
3713 "(8+8)*2-8",
3714 "(8\/8+2)*8"
3715 ],
3716 "complexity": 2
3717 },
3718 {
3719 "puzzle": "6 6 12 13",
3720 "solutions": [
3721 "13+12-6\/6"
3722 ],
3723 "complexity": 3
3724 },
3725 {
3726 "puzzle": "2 9 10 12",
3727 "solutions": [
3728 "(10-2)*(12-9)",
3729 "(10-9)*12*2"
3730 ],
3731 "complexity": 2
3732 },
3733 {
3734 "puzzle": "3 4 5 12",
3735 "solutions": [
3736 "12+5+4+3",
3737 "(4+3-5)*12",
3738 "(5+3)*12\/4",
3739 "12*4\/(5-3)",
3740 "12*5\/3+4",
3741 "5*4+12\/3",
3742 "(5*4-12)*3",
3743 "(12\/4+5)*3"
3744 ],
3745 "complexity": 1
3746 },
3747 {
3748 "puzzle": "3 6 11 12",
3749 "solutions": [
3750 "(11-6-3)*12",
3751 "(12+3-11)*6"
3752 ],
3753 "complexity": 2
3754 },
3755 {
3756 "puzzle": "4 7 12 13",
3757 "solutions": [
3758 "(13-7-4)*12",
3759 "(12+7-13)*4"
3760 ],
3761 "complexity": 2
3762 },
3763 {
3764 "puzzle": "7 8 8 9",
3765 "solutions": [
3766 "(9-7)*8+8"
3767 ],
3768 "complexity": 2
3769 },
3770 {
3771 "puzzle": "1 5 9 9",
3772 "solutions": [
3773 "9+9+5+1"
3774 ],
3775 "complexity": 1
3776 },
3777 {
3778 "puzzle": "2 2 7 13",
3779 "solutions": [
3780 "13+7+2+2",
3781 "(13-7)*(2+2)",
3782 "2*2+13+7",
3783 "(13-7)*2*2"
3784 ],
3785 "complexity": 1
3786 },
3787 {
3788 "puzzle": "4 5 11 13",
3789 "solutions": [
3790 "(13+11)*(5-4)"
3791 ],
3792 "complexity": 2
3793 },
3794 {
3795 "puzzle": "5 9 10 10",
3796 "solutions": [
3797 "10+10+9-5"
3798 ],
3799 "complexity": 1
3800 },
3801 {
3802 "puzzle": "3 7 7 9",
3803 "solutions": [
3804 "(9-7\/7)*3"
3805 ],
3806 "complexity": 3
3807 },
3808 {
3809 "puzzle": "3 7 11 12",
3810 "solutions": [
3811 "(11+3)*12\/7",
3812 "(12+7-11)*3",
3813 "(11-7)*3+12"
3814 ],
3815 "complexity": 2
3816 },
3817 {
3818 "puzzle": "4 8 10 12",
3819 "solutions": [
3820 "(8+4)*(12-10)",
3821 "(8+4-10)*12",
3822 "8\/4+12+10",
3823 "(10-4)*(12-8)",
3824 "12*4\/(10-8)",
3825 "(10+8-12)*4"
3826 ],
3827 "complexity": 2
3828 },
3829 {
3830 "puzzle": "5 6 11 13",
3831 "solutions": [
3832 "(13+11)*(6-5)",
3833 "(13-6)*5-11"
3834 ],
3835 "complexity": 2
3836 },
3837 {
3838 "puzzle": "1 3 4 5",
3839 "solutions": [
3840 "5*4+3+1",
3841 "(3+1)*5+4",
3842 "(5+4-1)*3",
3843 "(5+3)*(4-1)"
3844 ],
3845 "complexity": 2
3846 },
3847 {
3848 "puzzle": "1 3 7 8",
3849 "solutions": [
3850 "(7-3-1)*8"
3851 ],
3852 "complexity": 2
3853 },
3854 {
3855 "puzzle": "1 12 12 13",
3856 "solutions": [
3857 "(13+1-12)*12"
3858 ],
3859 "complexity": 2
3860 },
3861 {
3862 "puzzle": "3 9 10 11",
3863 "solutions": [
3864 "9\/3+11+10",
3865 "(10+9-11)*3"
3866 ],
3867 "complexity": 2
3868 },
3869 {
3870 "puzzle": "5 5 7 8",
3871 "solutions": [
3872 "(5+5-7)*8",
3873 "5*5+7-8"
3874 ],
3875 "complexity": 2
3876 },
3877 {
3878 "puzzle": "1 6 8 13",
3879 "solutions": [
3880 "(13-8-1)*6",
3881 "(13-1)*(8-6)"
3882 ],
3883 "complexity": 2
3884 },
3885 {
3886 "puzzle": "3 5 13 13",
3887 "solutions": [
3888 "13+13+3-5"
3889 ],
3890 "complexity": 1
3891 },
3892 {
3893 "puzzle": "1 7 9 13",
3894 "solutions": [
3895 "(7-1)*(13-9)",
3896 "(13-1)*(9-7)"
3897 ],
3898 "complexity": 2
3899 },
3900 {
3901 "puzzle": "5 10 11 11",
3902 "solutions": [
3903 "10\/5+11+11"
3904 ],
3905 "complexity": 3
3906 },
3907 {
3908 "puzzle": "7 9 10 12",
3909 "solutions": [
3910 "12+10+9-7"
3911 ],
3912 "complexity": 1
3913 },
3914 {
3915 "puzzle": "1 6 6 9",
3916 "solutions": [
3917 "(9+1-6)*6"
3918 ],
3919 "complexity": 2
3920 },
3921 {
3922 "puzzle": "2 2 3 9",
3923 "solutions": [
3924 "(9-3)*(2+2)",
3925 "(9-3)*2*2",
3926 "(9-2\/2)*3",
3927 "9*2+3*2"
3928 ],
3929 "complexity": 2
3930 },
3931 {
3932 "puzzle": "2 6 7 9",
3933 "solutions": [
3934 "9+7+6+2",
3935 "(9-7)*6*2",
3936 "(9+2-7)*6",
3937 "7*6-9*2"
3938 ],
3939 "complexity": 1
3940 },
3941 {
3942 "puzzle": "2 4 10 12",
3943 "solutions": [
3944 "(10-4*2)*12",
3945 "12+10+4-2",
3946 "4\/2+12+10",
3947 "(10-2)*12\/4",
3948 "(10-4)*2+12"
3949 ],
3950 "complexity": 1
3951 },
3952 {
3953 "puzzle": "3 5 5 12",
3954 "solutions": [
3955 "(3-5\/5)*12"
3956 ],
3957 "complexity": 3
3958 },
3959 {
3960 "puzzle": "4 7 11 11",
3961 "solutions": [
3962 "(7-11\/11)*4"
3963 ],
3964 "complexity": 3
3965 },
3966 {
3967 "puzzle": "1 1 6 8",
3968 "solutions": [
3969 "8*6\/(1+1)"
3970 ],
3971 "complexity": 3
3972 },
3973 {
3974 "puzzle": "2 3 3 11",
3975 "solutions": [
3976 "(11-2)*3-3",
3977 "(3\/3+11)*2"
3978 ],
3979 "complexity": 2
3980 },
3981 {
3982 "puzzle": "4 5 5 8",
3983 "solutions": [
3984 "(4-5\/5)*8"
3985 ],
3986 "complexity": 3
3987 },
3988 {
3989 "puzzle": "10 12 12 13",
3990 "solutions": [
3991 "12\/12+13+10",
3992 "(13-10)*12-12"
3993 ],
3994 "complexity": 2
3995 },
3996 {
3997 "puzzle": "1 8 9 11",
3998 "solutions": [
3999 "(11+1-9)*8",
4000 "(9-1)*(11-8)"
4001 ],
4002 "complexity": 2
4003 },
4004 {
4005 "puzzle": "3 4 8 10",
4006 "solutions": [
4007 "(10-4-3)*8",
4008 "(10-8)*4*3",
4009 "(10+8)*4\/3",
4010 "(10-8\/4)*3"
4011 ],
4012 "complexity": 2
4013 },
4014 {
4015 "puzzle": "7 10 10 11",
4016 "solutions": [
4017 "11+10+10-7"
4018 ],
4019 "complexity": 1
4020 },
4021 {
4022 "puzzle": "1 8 11 12",
4023 "solutions": [
4024 "(11-8-1)*12"
4025 ],
4026 "complexity": 2
4027 },
4028 {
4029 "puzzle": "2 7 8 13",
4030 "solutions": [
4031 "(13-7)*8\/2",
4032 "8\/2+13+7",
4033 "(13+7-8)*2"
4034 ],
4035 "complexity": 2
4036 },
4037 {
4038 "puzzle": "3 6 6 6",
4039 "solutions": [
4040 "(6-3)*6+6",
4041 "(6+6)*6\/3",
4042 "(6-6\/3)*6",
4043 "(6\/6+3)*6"
4044 ],
4045 "complexity": 2
4046 },
4047 {
4048 "puzzle": "3 3 4 5",
4049 "solutions": [
4050 "(3\/3+5)*4",
4051 "(5-3)*4*3",
4052 "(5+4)*3-3"
4053 ],
4054 "complexity": 2
4055 },
4056 {
4057 "puzzle": "3 3 9 9",
4058 "solutions": [
4059 "9+9+3+3",
4060 "9*3-9\/3",
4061 "9*9\/3-3"
4062 ],
4063 "complexity": 1
4064 },
4065 {
4066 "puzzle": "5 5 9 9",
4067 "solutions": [
4068 "5*5-9\/9"
4069 ],
4070 "complexity": 3
4071 },
4072 {
4073 "puzzle": "5 8 8 10",
4074 "solutions": [
4075 "(8+5-10)*8",
4076 "10*8\/5+8"
4077 ],
4078 "complexity": 2
4079 },
4080 {
4081 "puzzle": "6 8 13 13",
4082 "solutions": [
4083 "13+13+6-8"
4084 ],
4085 "complexity": 1
4086 },
4087 {
4088 "puzzle": "2 3 7 12",
4089 "solutions": [
4090 "12+7+3+2",
4091 "(7-3-2)*12",
4092 "(7-3)*12\/2"
4093 ],
4094 "complexity": 1
4095 },
4096 {
4097 "puzzle": "3 6 8 8",
4098 "solutions": [
4099 "8*6\/3+8",
4100 "8*6-8*3",
4101 "(8\/8+3)*6"
4102 ],
4103 "complexity": 2
4104 },
4105 {
4106 "puzzle": "4 4 5 8",
4107 "solutions": [
4108 "(4+4)*(8-5)",
4109 "(4+4-5)*8",
4110 "8*5-4*4",
4111 "5*4+8-4",
4112 "(8-4)*5+4"
4113 ],
4114 "complexity": 2
4115 },
4116 {
4117 "puzzle": "5 6 8 8",
4118 "solutions": [
4119 "(6+5-8)*8",
4120 "(5-8\/8)*6"
4121 ],
4122 "complexity": 2
4123 },
4124 {
4125 "puzzle": "10 11 11 12",
4126 "solutions": [
4127 "12+11+11-10"
4128 ],
4129 "complexity": 1
4130 },
4131 {
4132 "puzzle": "1 11 12 13",
4133 "solutions": [
4134 "(13-11)*12*1"
4135 ],
4136 "complexity": 2
4137 },
4138 {
4139 "puzzle": "2 5 6 8",
4140 "solutions": [
4141 "5*2+8+6",
4142 "(6+2-5)*8",
4143 "(6+2)*(8-5)",
4144 "6*5+2-8",
4145 "(8-2)*5-6"
4146 ],
4147 "complexity": 2
4148 },
4149 {
4150 "puzzle": "3 5 6 8",
4151 "solutions": [
4152 "8*6\/(5-3)",
4153 "(5-6\/3)*8",
4154 "(6-5)*8*3"
4155 ],
4156 "complexity": 2
4157 },
4158 {
4159 "puzzle": "3 9 11 11",
4160 "solutions": [
4161 "(9-11\/11)*3"
4162 ],
4163 "complexity": 3
4164 },
4165 {
4166 "puzzle": "2 10 10 11",
4167 "solutions": [
4168 "(10\/10+11)*2"
4169 ],
4170 "complexity": 3
4171 },
4172 {
4173 "puzzle": "5 5 10 11",
4174 "solutions": [
4175 "5*5+10-11"
4176 ],
4177 "complexity": 2
4178 },
4179 {
4180 "puzzle": "7 10 12 12",
4181 "solutions": [
4182 "(10-7)*12-12",
4183 "12*10\/(12-7)"
4184 ],
4185 "complexity": 2
4186 },
4187 {
4188 "puzzle": "2 2 4 7",
4189 "solutions": [
4190 "7*4-2-2",
4191 "(2+2)*7-4",
4192 "7*4-2*2",
4193 "7*2*2-4",
4194 "(7-2\/2)*4",
4195 "(7+4)*2+2"
4196 ],
4197 "complexity": 2
4198 },
4199 {
4200 "puzzle": "3 3 10 13",
4201 "solutions": [
4202 "3\/3+13+10"
4203 ],
4204 "complexity": 3
4205 },
4206 {
4207 "puzzle": "3 5 10 12",
4208 "solutions": [
4209 "(10-5-3)*12",
4210 "12+10+5-3"
4211 ],
4212 "complexity": 1
4213 },
4214 {
4215 "puzzle": "1 2 3 9",
4216 "solutions": [
4217 "9*3-2-1",
4218 "(2+1)*9-3",
4219 "(9+3)*2*1",
4220 "(9+1-2)*3"
4221 ],
4222 "complexity": 2
4223 },
4224 {
4225 "puzzle": "1 4 4 4",
4226 "solutions": [
4227 "(4+1)*4+4",
4228 "(4+4)*(4-1)"
4229 ],
4230 "complexity": 2
4231 },
4232 {
4233 "puzzle": "1 7 9 9",
4234 "solutions": [
4235 "9+9+7-1"
4236 ],
4237 "complexity": 1
4238 },
4239 {
4240 "puzzle": "1 8 9 13",
4241 "solutions": [
4242 "(13-9-1)*8"
4243 ],
4244 "complexity": 2
4245 },
4246 {
4247 "puzzle": "4 4 4 7",
4248 "solutions": [
4249 "(4+4)*(7-4)",
4250 "(7-4\/4)*4"
4251 ],
4252 "complexity": 2
4253 },
4254 {
4255 "puzzle": "4 7 9 9",
4256 "solutions": [
4257 "(7-9\/9)*4"
4258 ],
4259 "complexity": 3
4260 },
4261 {
4262 "puzzle": "2 4 8 10",
4263 "solutions": [
4264 "10+8+4+2",
4265 "10*4-8*2",
4266 "(8*2-10)*4",
4267 "(10-4)*8\/2",
4268 "(10-8\/2)*4",
4269 "(10+2)*8\/4",
4270 "10*2+8-4",
4271 "8*4+2-10",
4272 "(10-2)*4-8",
4273 "(8\/4+10)*2",
4274 "(10*4+8)\/2"
4275 ],
4276 "complexity": 1
4277 },
4278 {
4279 "puzzle": "2 6 9 11",
4280 "solutions": [
4281 "(11-9)*6*2",
4282 "11+9+6-2",
4283 "11*6\/2-9",
4284 "(11+2-9)*6"
4285 ],
4286 "complexity": 1
4287 },
4288 {
4289 "puzzle": "3 9 13 13",
4290 "solutions": [
4291 "(9-13\/13)*3"
4292 ],
4293 "complexity": 3
4294 },
4295 {
4296 "puzzle": "4 8 12 13",
4297 "solutions": [
4298 "(12+4-13)*8",
4299 "12\/4+13+8"
4300 ],
4301 "complexity": 2
4302 },
4303 {
4304 "puzzle": "1 2 3 7",
4305 "solutions": [
4306 "7*3+2+1",
4307 "(2+1)*7+3",
4308 "(7+2-1)*3"
4309 ],
4310 "complexity": 2
4311 },
4312 {
4313 "puzzle": "1 4 5 5",
4314 "solutions": [
4315 "5*4+5-1",
4316 "(5-1)*5+4"
4317 ],
4318 "complexity": 2
4319 },
4320 {
4321 "puzzle": "5 7 13 13",
4322 "solutions": [
4323 "13+13+5-7"
4324 ],
4325 "complexity": 1
4326 },
4327 {
4328 "puzzle": "6 6 6 9",
4329 "solutions": [
4330 "6*6*6\/9",
4331 "(9-6)*6+6"
4332 ],
4333 "complexity": 2
4334 },
4335 {
4336 "puzzle": "9 10 10 13",
4337 "solutions": [
4338 "13+10+10-9"
4339 ],
4340 "complexity": 1
4341 },
4342 {
4343 "puzzle": "1 5 5 6",
4344 "solutions": [
4345 "6*5-5-1",
4346 "(5+1)*5-6"
4347 ],
4348 "complexity": 2
4349 },
4350 {
4351 "puzzle": "6 7 11 13",
4352 "solutions": [
4353 "(13+11)*(7-6)"
4354 ],
4355 "complexity": 2
4356 },
4357 {
4358 "puzzle": "2 2 6 6",
4359 "solutions": [
4360 "(6+2)*6\/2",
4361 "6*2+6*2"
4362 ],
4363 "complexity": 2
4364 },
4365 {
4366 "puzzle": "2 10 10 13",
4367 "solutions": [
4368 "(10-2)*(13-10)",
4369 "(13-10\/10)*2"
4370 ],
4371 "complexity": 2
4372 },
4373 {
4374 "puzzle": "3 4 4 7",
4375 "solutions": [
4376 "(7+3-4)*4",
4377 "(4\/4+7)*3"
4378 ],
4379 "complexity": 2
4380 },
4381 {
4382 "puzzle": "1 2 2 4",
4383 "solutions": [
4384 "(2+1)*4*2"
4385 ],
4386 "complexity": 2
4387 },
4388 {
4389 "puzzle": "2 6 6 6",
4390 "solutions": [
4391 "6*2+6+6",
4392 "6*6-6*2",
4393 "6*6\/2+6"
4394 ],
4395 "complexity": 2
4396 },
4397 {
4398 "puzzle": "2 2 7 8",
4399 "solutions": [
4400 "(7-2-2)*8",
4401 "(7-2*2)*8",
4402 "7*2+8+2"
4403 ],
4404 "complexity": 2
4405 },
4406 {
4407 "puzzle": "2 6 6 13",
4408 "solutions": [
4409 "(13-6\/6)*2"
4410 ],
4411 "complexity": 3
4412 },
4413 {
4414 "puzzle": "3 3 5 5",
4415 "solutions": [
4416 "5*5-3\/3"
4417 ],
4418 "complexity": 3
4419 },
4420 {
4421 "puzzle": "3 5 5 7",
4422 "solutions": [
4423 "(7+5)*(5-3)",
4424 "(5\/5+7)*3"
4425 ],
4426 "complexity": 2
4427 },
4428 {
4429 "puzzle": "3 5 6 12",
4430 "solutions": [
4431 "(5+3-6)*12",
4432 "(12-5-3)*6",
4433 "(5-3)*6+12"
4434 ],
4435 "complexity": 2
4436 },
4437 {
4438 "puzzle": "4 4 7 9",
4439 "solutions": [
4440 "9+7+4+4",
4441 "(9+4-7)*4"
4442 ],
4443 "complexity": 1
4444 },
4445 {
4446 "puzzle": "4 4 8 8",
4447 "solutions": [
4448 "8+8+4+4",
4449 "(8+4)*8\/4",
4450 "(8-4)*4+8",
4451 "(8-8\/4)*4"
4452 ],
4453 "complexity": 1
4454 },
4455 {
4456 "puzzle": "5 10 13 13",
4457 "solutions": [
4458 "10*5-13-13",
4459 "13+13-10\/5",
4460 "(13-5)*(13-10)"
4461 ],
4462 "complexity": 2
4463 },
4464 {
4465 "puzzle": "8 8 8 12",
4466 "solutions": [
4467 "(8+8)*12\/8",
4468 "(12-8)*8-8"
4469 ],
4470 "complexity": 2
4471 },
4472 {
4473 "puzzle": "1 2 4 13",
4474 "solutions": [
4475 "(13+1)*2-4",
4476 "(13-1)*(4-2)",
4477 "(13-1)*4\/2"
4478 ],
4479 "complexity": 2
4480 },
4481 {
4482 "puzzle": "3 7 9 10",
4483 "solutions": [
4484 "9*3+7-10",
4485 "(10+7-9)*3",
4486 "(10-7)*9-3"
4487 ],
4488 "complexity": 2
4489 },
4490 {
4491 "puzzle": "2 3 4 12",
4492 "solutions": [
4493 "(3*2-4)*12",
4494 "(12-3*2)*4",
4495 "(12+4)*3\/2",
4496 "(4+2)*12\/3",
4497 "(4-3)*12*2",
4498 "(12\/3+2)*4"
4499 ],
4500 "complexity": 2
4501 },
4502 {
4503 "puzzle": "2 6 6 11",
4504 "solutions": [
4505 "(6\/6+11)*2"
4506 ],
4507 "complexity": 3
4508 },
4509 {
4510 "puzzle": "3 6 10 12",
4511 "solutions": [
4512 "6\/3+12+10",
4513 "10*3+6-12",
4514 "10*6-12*3",
4515 "(10*6+12)\/3",
4516 "(12+6-10)*3",
4517 "(10-6)*3+12",
4518 "(10-12\/6)*3"
4519 ],
4520 "complexity": 2
4521 },
4522 {
4523 "puzzle": "2 4 4 13",
4524 "solutions": [
4525 "(13-4\/4)*2",
4526 "(13*4-4)\/2"
4527 ],
4528 "complexity": 3
4529 },
4530 {
4531 "puzzle": "2 7 8 8",
4532 "solutions": [
4533 "(8+2-7)*8",
4534 "(7-8\/2)*8",
4535 "(8*7-8)\/2"
4536 ],
4537 "complexity": 2
4538 },
4539 {
4540 "puzzle": "2 8 12 13",
4541 "solutions": [
4542 "(13+2-12)*8"
4543 ],
4544 "complexity": 2
4545 },
4546 {
4547 "puzzle": "3 4 4 12",
4548 "solutions": [
4549 "(3-4\/4)*12",
4550 "(12\/4+3)*4"
4551 ],
4552 "complexity": 3
4553 },
4554 {
4555 "puzzle": "2 4 5 13",
4556 "solutions": [
4557 "13+5+4+2",
4558 "(13-5-2)*4",
4559 "(13+4-5)*2"
4560 ],
4561 "complexity": 1
4562 },
4563 {
4564 "puzzle": "1 2 12 13",
4565 "solutions": [
4566 "13+12+1-2"
4567 ],
4568 "complexity": 1
4569 },
4570 {
4571 "puzzle": "3 4 9 12",
4572 "solutions": [
4573 "(9-4-3)*12",
4574 "9*4\/3+12",
4575 "9*3-12\/4",
4576 "(12+3-9)*4",
4577 "(12-4)*9\/3",
4578 "12*9\/4-3"
4579 ],
4580 "complexity": 2
4581 },
4582 {
4583 "puzzle": "2 3 5 6",
4584 "solutions": [
4585 "6*5-3*2",
4586 "5*3*2-6",
4587 "(5+2-3)*6",
4588 "(5-3)*6*2",
4589 "(5+3)*6\/2",
4590 "(6\/2+5)*3"
4591 ],
4592 "complexity": 2
4593 },
4594 {
4595 "puzzle": "3 9 12 12",
4596 "solutions": [
4597 "12*12\/(9-3)",
4598 "12*9\/3-12",
4599 "(9-12\/12)*3"
4600 ],
4601 "complexity": 3
4602 },
4603 {
4604 "puzzle": "9 11 13 13",
4605 "solutions": [
4606 "13+13+9-11"
4607 ],
4608 "complexity": 1
4609 },
4610 {
4611 "puzzle": "2 6 8 11",
4612 "solutions": [
4613 "(6+2)*(11-8)",
4614 "(11-6-2)*8",
4615 "11*2+8-6",
4616 "(8-6)*11+2"
4617 ],
4618 "complexity": 2
4619 },
4620 {
4621 "puzzle": "1 3 8 12",
4622 "solutions": [
4623 "12+8+3+1",
4624 "12*8\/(3+1)",
4625 "(12\/3-1)*8"
4626 ],
4627 "complexity": 1
4628 },
4629 {
4630 "puzzle": "2 4 4 11",
4631 "solutions": [
4632 "(4\/4+11)*2",
4633 "(11*4+4)\/2"
4634 ],
4635 "complexity": 3
4636 },
4637 {
4638 "puzzle": "4 8 10 11",
4639 "solutions": [
4640 "(10+4-11)*8"
4641 ],
4642 "complexity": 2
4643 },
4644 {
4645 "puzzle": "1 4 10 11",
4646 "solutions": [
4647 "11+10+4-1"
4648 ],
4649 "complexity": 1
4650 },
4651 {
4652 "puzzle": "8 9 11 13",
4653 "solutions": [
4654 "(13+11)*(9-8)"
4655 ],
4656 "complexity": 2
4657 },
4658 {
4659 "puzzle": "1 9 11 11",
4660 "solutions": [
4661 "(11+1)*(11-9)"
4662 ],
4663 "complexity": 2
4664 },
4665 {
4666 "puzzle": "2 6 11 13",
4667 "solutions": [
4668 "(13-11)*6*2",
4669 "(13+2-11)*6"
4670 ],
4671 "complexity": 2
4672 },
4673 {
4674 "puzzle": "1 4 9 12",
4675 "solutions": [
4676 "12+9+4-1",
4677 "(9-1)*12\/4",
4678 "(9*4-12)*1"
4679 ],
4680 "complexity": 1
4681 },
4682 {
4683 "puzzle": "2 2 4 10",
4684 "solutions": [
4685 "(10-4)*(2+2)",
4686 "(10-2-2)*4",
4687 "(10-4)*2*2",
4688 "(10-2*2)*4",
4689 "(10+4-2)*2",
4690 "(10+2)*(4-2)",
4691 "(10+2)*4\/2",
4692 "(4\/2+10)*2"
4693 ],
4694 "complexity": 2
4695 },
4696 {
4697 "puzzle": "4 5 7 8",
4698 "solutions": [
4699 "8+7+5+4",
4700 "(8+4)*(7-5)",
4701 "(7+5)*8\/4",
4702 "(8+5-7)*4"
4703 ],
4704 "complexity": 1
4705 },
4706 {
4707 "puzzle": "4 7 9 10",
4708 "solutions": [
4709 "10*4-9-7",
4710 "(9+7-10)*4",
4711 "(9-7)*10+4"
4712 ],
4713 "complexity": 2
4714 },
4715 {
4716 "puzzle": "2 2 2 10",
4717 "solutions": [
4718 "10*2+2+2",
4719 "10*2+2*2"
4720 ],
4721 "complexity": 2
4722 },
4723 {
4724 "puzzle": "3 3 4 12",
4725 "solutions": [
4726 "(3+3-4)*12",
4727 "(12-3-3)*4",
4728 "4*3*3-12",
4729 "12*3-4*3",
4730 "(12\/3+4)*3"
4731 ],
4732 "complexity": 2
4733 },
4734 {
4735 "puzzle": "2 6 8 10",
4736 "solutions": [
4737 "(10-8)*6*2",
4738 "(10+2-8)*6",
4739 "(8-2)*(10-6)",
4740 "(10+2)*(8-6)",
4741 "(10+8-6)*2",
4742 "(10+6)*2-8"
4743 ],
4744 "complexity": 2
4745 },
4746 {
4747 "puzzle": "3 4 4 9",
4748 "solutions": [
4749 "9*4-4*3",
4750 "(4+4)*9\/3",
4751 "(9-4\/4)*3"
4752 ],
4753 "complexity": 2
4754 },
4755 {
4756 "puzzle": "3 6 12 12",
4757 "solutions": [
4758 "(6-3)*12-12",
4759 "(12-6)*12\/3",
4760 "(6-12\/3)*12",
4761 "(12\/12+3)*6"
4762 ],
4763 "complexity": 2
4764 },
4765 {
4766 "puzzle": "1 2 2 5",
4767 "solutions": [
4768 "(5+1)*(2+2)",
4769 "(5+1)*2*2"
4770 ],
4771 "complexity": 2
4772 },
4773 {
4774 "puzzle": "1 3 5 11",
4775 "solutions": [
4776 "(11-5)*(3+1)",
4777 "(11+1)*(5-3)"
4778 ],
4779 "complexity": 2
4780 },
4781 {
4782 "puzzle": "5 6 7 8",
4783 "solutions": [
4784 "(7+5)*(8-6)",
4785 "(7+5-8)*6",
4786 "8*6\/(7-5)"
4787 ],
4788 "complexity": 2
4789 },
4790 {
4791 "puzzle": "5 6 10 10",
4792 "solutions": [
4793 "(10+10)*6\/5",
4794 "(5-10\/10)*6"
4795 ],
4796 "complexity": 3
4797 },
4798 {
4799 "puzzle": "3 3 4 7",
4800 "solutions": [
4801 "(7-3\/3)*4",
4802 "(7+4-3)*3"
4803 ],
4804 "complexity": 2
4805 },
4806 {
4807 "puzzle": "3 6 6 9",
4808 "solutions": [
4809 "9+6+6+3",
4810 "9*6\/3+6",
4811 "6*6-9-3",
4812 "(9-6\/6)*3"
4813 ],
4814 "complexity": 1
4815 },
4816 {
4817 "puzzle": "6 6 10 12",
4818 "solutions": [
4819 "(6+6)*(12-10)",
4820 "(6+6-10)*12",
4821 "(10+6-12)*6",
4822 "(12-6)*(10-6)"
4823 ],
4824 "complexity": 2
4825 },
4826 {
4827 "puzzle": "1 2 9 12",
4828 "solutions": [
4829 "12+9+2+1"
4830 ],
4831 "complexity": 1
4832 },
4833 {
4834 "puzzle": "4 4 4 5",
4835 "solutions": [
4836 "(4\/4+5)*4"
4837 ],
4838 "complexity": 3
4839 },
4840 {
4841 "puzzle": "1 2 4 11",
4842 "solutions": [
4843 "(11+1)*(4-2)",
4844 "(11+1)*4\/2",
4845 "(11-1)*2+4"
4846 ],
4847 "complexity": 2
4848 },
4849 {
4850 "puzzle": "1 6 9 13",
4851 "solutions": [
4852 "(13-9)*6*1"
4853 ],
4854 "complexity": 2
4855 },
4856 {
4857 "puzzle": "1 5 6 10",
4858 "solutions": [
4859 "(5+1)*(10-6)",
4860 "(10-5-1)*6"
4861 ],
4862 "complexity": 2
4863 },
4864 {
4865 "puzzle": "2 5 5 11",
4866 "solutions": [
4867 "(5+2)*5-11",
4868 "(5\/5+11)*2"
4869 ],
4870 "complexity": 2
4871 },
4872 {
4873 "puzzle": "1 4 8 11",
4874 "solutions": [
4875 "11+8+4+1",
4876 "(11+1)*8\/4"
4877 ],
4878 "complexity": 1
4879 },
4880 {
4881 "puzzle": "5 6 6 6",
4882 "solutions": [
4883 "(5-6\/6)*6"
4884 ],
4885 "complexity": 3
4886 },
4887 {
4888 "puzzle": "3 5 8 11",
4889 "solutions": [
4890 "(5+3)*(11-8)",
4891 "(11-5-3)*8",
4892 "(11-3)*(8-5)",
4893 "(11+5-8)*3"
4894 ],
4895 "complexity": 2
4896 },
4897 {
4898 "puzzle": "1 4 4 10",
4899 "solutions": [
4900 "(10-4)*4*1"
4901 ],
4902 "complexity": 2
4903 },
4904 {
4905 "puzzle": "5 6 10 11",
4906 "solutions": [
4907 "(10+5-11)*6",
4908 "(11-5)*(10-6)"
4909 ],
4910 "complexity": 2
4911 },
4912 {
4913 "puzzle": "6 6 7 10",
4914 "solutions": [
4915 "(10-7)*6+6"
4916 ],
4917 "complexity": 2
4918 },
4919 {
4920 "puzzle": "6 6 9 12",
4921 "solutions": [
4922 "12*6\/(9-6)",
4923 "12*9\/6+6",
4924 "(12-9)*6+6"
4925 ],
4926 "complexity": 2
4927 },
4928 {
4929 "puzzle": "3 12 12 12",
4930 "solutions": [
4931 "(3-12\/12)*12"
4932 ],
4933 "complexity": 3
4934 },
4935 {
4936 "puzzle": "1 2 6 9",
4937 "solutions": [
4938 "(9-1)*6\/2",
4939 "(9*2+6)*1"
4940 ],
4941 "complexity": 2
4942 },
4943 {
4944 "puzzle": "2 2 9 11",
4945 "solutions": [
4946 "11+9+2+2",
4947 "2*2+11+9"
4948 ],
4949 "complexity": 1
4950 },
4951 {
4952 "puzzle": "2 7 7 11",
4953 "solutions": [
4954 "(7-2)*7-11",
4955 "(7\/7+11)*2"
4956 ],
4957 "complexity": 2
4958 },
4959 {
4960 "puzzle": "3 9 10 10",
4961 "solutions": [
4962 "(9-10\/10)*3"
4963 ],
4964 "complexity": 3
4965 },
4966 {
4967 "puzzle": "5 8 8 9",
4968 "solutions": [
4969 "9*8\/(8-5)",
4970 "(9-5)*8-8"
4971 ],
4972 "complexity": 2
4973 },
4974 {
4975 "puzzle": "3 4 12 13",
4976 "solutions": [
4977 "13+12+3-4"
4978 ],
4979 "complexity": 1
4980 },
4981 {
4982 "puzzle": "3 6 10 10",
4983 "solutions": [
4984 "(10\/10+3)*6"
4985 ],
4986 "complexity": 3
4987 },
4988 {
4989 "puzzle": "2 2 4 8",
4990 "solutions": [
4991 "(2+2)*4+8",
4992 "4*2*2+8",
4993 "(4-2\/2)*8",
4994 "(4+2)*8\/2",
4995 "8*2+4*2",
4996 "(8+2)*2+4",
4997 "(8*2-4)*2",
4998 "(8\/2+2)*4"
4999 ],
5000 "complexity": 2
5001 },
5002 {
5003 "puzzle": "4 5 10 11",
5004 "solutions": [
5005 "10*4-11-5",
5006 "(11+5-10)*4"
5007 ],
5008 "complexity": 2
5009 },
5010 {
5011 "puzzle": "10 12 13 13",
5012 "solutions": [
5013 "13+13+10-12"
5014 ],
5015 "complexity": 1
5016 },
5017 {
5018 "puzzle": "1 4 4 9",
5019 "solutions": [
5020 "(9+1-4)*4",
5021 "4*4+9-1"
5022 ],
5023 "complexity": 2
5024 },
5025 {
5026 "puzzle": "3 3 8 9",
5027 "solutions": [
5028 "(9-3-3)*8",
5029 "(8+3)*3-9",
5030 "(8-3)*3+9"
5031 ],
5032 "complexity": 2
5033 },
5034 {
5035 "puzzle": "2 4 6 10",
5036 "solutions": [
5037 "(4+2)*(10-6)",
5038 "(10-4-2)*6",
5039 "4*2+10+6",
5040 "(10+2-6)*4",
5041 "(10-4)*(6-2)",
5042 "(10+2)*(6-4)",
5043 "(10+6-4)*2"
5044 ],
5045 "complexity": 2
5046 },
5047 {
5048 "puzzle": "6 7 8 10",
5049 "solutions": [
5050 "(7+6-10)*8",
5051 "7*6-10-8",
5052 "(8-6)*7+10"
5053 ],
5054 "complexity": 2
5055 },
5056 {
5057 "puzzle": "3 4 5 5",
5058 "solutions": [
5059 "5*5+3-4",
5060 "5*3+5+4"
5061 ],
5062 "complexity": 2
5063 },
5064 {
5065 "puzzle": "3 7 12 12",
5066 "solutions": [
5067 "(12-7-3)*12",
5068 "(12*7-12)\/3",
5069 "(12\/12+7)*3"
5070 ],
5071 "complexity": 2
5072 },
5073 {
5074 "puzzle": "2 2 6 12",
5075 "solutions": [
5076 "(12-6)*(2+2)",
5077 "(6-2-2)*12",
5078 "(12-6)*2*2",
5079 "(6-2*2)*12",
5080 "(6-2)*12\/2",
5081 "(12\/2-2)*6",
5082 "(12\/2+6)*2"
5083 ],
5084 "complexity": 2
5085 },
5086 {
5087 "puzzle": "3 6 7 9",
5088 "solutions": [
5089 "7*3+9-6",
5090 "(7-9\/3)*6",
5091 "(9+6-7)*3",
5092 "(9-6)*7+3"
5093 ],
5094 "complexity": 2
5095 },
5096 {
5097 "puzzle": "4 5 8 9",
5098 "solutions": [
5099 "(9+5-8)*4",
5100 "(9-5)*4+8"
5101 ],
5102 "complexity": 2
5103 },
5104 {
5105 "puzzle": "4 6 8 9",
5106 "solutions": [
5107 "(9-8)*6*4",
5108 "9*8\/4+6"
5109 ],
5110 "complexity": 2
5111 },
5112 {
5113 "puzzle": "4 8 9 10",
5114 "solutions": [
5115 "(9+4-10)*8"
5116 ],
5117 "complexity": 2
5118 },
5119 {
5120 "puzzle": "7 8 11 13",
5121 "solutions": [
5122 "(13+11)*(8-7)",
5123 "(13-8)*7-11"
5124 ],
5125 "complexity": 2
5126 },
5127 {
5128 "puzzle": "2 2 3 3",
5129 "solutions": [
5130 "(3+3)*(2+2)",
5131 "(3+3)*2*2",
5132 "(3*2+2)*3"
5133 ],
5134 "complexity": 2
5135 },
5136 {
5137 "puzzle": "8 10 13 13",
5138 "solutions": [
5139 "13+13+8-10"
5140 ],
5141 "complexity": 1
5142 },
5143 {
5144 "puzzle": "2 3 5 11",
5145 "solutions": [
5146 "(11+5)*3\/2",
5147 "5*2+11+3",
5148 "(11+2-5)*3",
5149 "(11-3)*(5-2)",
5150 "11*2+5-3",
5151 "5*3+11-2",
5152 "(5-3)*11+2"
5153 ],
5154 "complexity": 2
5155 },
5156 {
5157 "puzzle": "3 4 7 9",
5158 "solutions": [
5159 "(9-7)*4*3",
5160 "9*3+4-7",
5161 "(7+4)*3-9",
5162 "(7-4)*9-3"
5163 ],
5164 "complexity": 2
5165 },
5166 {
5167 "puzzle": "3 12 12 13",
5168 "solutions": [
5169 "(12+3-13)*12"
5170 ],
5171 "complexity": 2
5172 },
5173 {
5174 "puzzle": "1 4 6 11",
5175 "solutions": [
5176 "(11+1-6)*4",
5177 "(11+1)*(6-4)"
5178 ],
5179 "complexity": 2
5180 },
5181 {
5182 "puzzle": "2 3 3 6",
5183 "solutions": [
5184 "6*3+3*2",
5185 "3*3*2+6",
5186 "(3+3-2)*6",
5187 "(3+3)*(6-2)",
5188 "(6+3+3)*2"
5189 ],
5190 "complexity": 2
5191 },
5192 {
5193 "puzzle": "2 5 6 13",
5194 "solutions": [
5195 "(13-5)*6\/2",
5196 "(13+5-6)*2"
5197 ],
5198 "complexity": 2
5199 },
5200 {
5201 "puzzle": "3 4 10 12",
5202 "solutions": [
5203 "(12-10)*4*3",
5204 "(4*3-10)*12",
5205 "(10-4)*12\/3",
5206 "(10-12\/3)*4"
5207 ],
5208 "complexity": 2
5209 },
5210 {
5211 "puzzle": "5 8 8 13",
5212 "solutions": [
5213 "13+8+8-5"
5214 ],
5215 "complexity": 1
5216 },
5217 {
5218 "puzzle": "3 9 12 13",
5219 "solutions": [
5220 "(12+9-13)*3",
5221 "(13-9)*3+12"
5222 ],
5223 "complexity": 2
5224 },
5225 {
5226 "puzzle": "1 3 6 9",
5227 "solutions": [
5228 "(3-1)*9+6",
5229 "(6-1)*3+9",
5230 "(9+1)*3-6",
5231 "(9-1)*(6-3)",
5232 "(9\/3+1)*6"
5233 ],
5234 "complexity": 2
5235 },
5236 {
5237 "puzzle": "1 2 5 9",
5238 "solutions": [
5239 "(2+1)*5+9",
5240 "9*2+5+1",
5241 "(9-1)*(5-2)"
5242 ],
5243 "complexity": 2
5244 },
5245 {
5246 "puzzle": "3 7 10 11",
5247 "solutions": [
5248 "(11-3)*(10-7)",
5249 "(11+7-10)*3"
5250 ],
5251 "complexity": 2
5252 },
5253 {
5254 "puzzle": "4 4 6 12",
5255 "solutions": [
5256 "(4+4-6)*12",
5257 "(12-4-4)*6",
5258 "(4*4-12)*6",
5259 "12*4-6*4",
5260 "12*4\/(6-4)",
5261 "(12+4)*6\/4",
5262 "(12\/6+4)*4"
5263 ],
5264 "complexity": 2
5265 },
5266 {
5267 "puzzle": "4 10 12 12",
5268 "solutions": [
5269 "(10+4-12)*12",
5270 "12*12\/(10-4)",
5271 "12*4\/(12-10)"
5272 ],
5273 "complexity": 2
5274 },
5275 {
5276 "puzzle": "2 7 8 11",
5277 "solutions": [
5278 "(7*2-11)*8",
5279 "11+8+7-2",
5280 "(8-2)*(11-7)",
5281 "(11+8-7)*2"
5282 ],
5283 "complexity": 1
5284 },
5285 {
5286 "puzzle": "10 11 12 13",
5287 "solutions": [
5288 "13+12+10-11"
5289 ],
5290 "complexity": 1
5291 },
5292 {
5293 "puzzle": "2 3 4 8",
5294 "solutions": [
5295 "(8-4)*3*2",
5296 "(4+2-3)*8",
5297 "(8\/2+4)*3"
5298 ],
5299 "complexity": 2
5300 },
5301 {
5302 "puzzle": "2 8 8 9",
5303 "solutions": [
5304 "(9+2-8)*8"
5305 ],
5306 "complexity": 2
5307 },
5308 {
5309 "puzzle": "4 7 9 12",
5310 "solutions": [
5311 "(7+4-9)*12",
5312 "12+9+7-4",
5313 "12*4\/(9-7)"
5314 ],
5315 "complexity": 1
5316 },
5317 {
5318 "puzzle": "4 8 8 9",
5319 "solutions": [
5320 "(8+4-9)*8"
5321 ],
5322 "complexity": 2
5323 },
5324 {
5325 "puzzle": "3 5 8 8",
5326 "solutions": [
5327 "8+8+5+3",
5328 "(5-3)*8+8"
5329 ],
5330 "complexity": 1
5331 },
5332 {
5333 "puzzle": "4 5 9 10",
5334 "solutions": [
5335 "(10-4)*(9-5)",
5336 "(10+5-9)*4"
5337 ],
5338 "complexity": 2
5339 },
5340 {
5341 "puzzle": "8 10 10 12",
5342 "solutions": [
5343 "12+10+10-8"
5344 ],
5345 "complexity": 1
5346 },
5347 {
5348 "puzzle": "2 4 9 13",
5349 "solutions": [
5350 "(4+2)*(13-9)",
5351 "13+9+4-2",
5352 "4\/2+13+9",
5353 "(13+2-9)*4"
5354 ],
5355 "complexity": 1
5356 },
5357 {
5358 "puzzle": "1 1 7 10",
5359 "solutions": [
5360 "(1+1)*7+10"
5361 ],
5362 "complexity": 2
5363 },
5364 {
5365 "puzzle": "2 2 3 7",
5366 "solutions": [
5367 "(2\/2+7)*3",
5368 "(7+3+2)*2"
5369 ],
5370 "complexity": 2
5371 },
5372 {
5373 "puzzle": "1 5 9 10",
5374 "solutions": [
5375 "(10+9+5)*1"
5376 ],
5377 "complexity": 2
5378 },
5379 {
5380 "puzzle": "2 5 6 7",
5381 "solutions": [
5382 "(7+2-5)*6",
5383 "6*2+7+5",
5384 "(7-5)*6*2"
5385 ],
5386 "complexity": 2
5387 },
5388 {
5389 "puzzle": "2 7 11 12",
5390 "solutions": [
5391 "(11-7-2)*12",
5392 "(11-7)*12\/2",
5393 "12\/2+11+7",
5394 "(11+7)*2-12"
5395 ],
5396 "complexity": 2
5397 },
5398 {
5399 "puzzle": "2 8 9 13",
5400 "solutions": [
5401 "(8-2)*(13-9)",
5402 "(13+8-9)*2"
5403 ],
5404 "complexity": 2
5405 },
5406 {
5407 "puzzle": "1 4 5 11",
5408 "solutions": [
5409 "(11-5)*4*1"
5410 ],
5411 "complexity": 2
5412 },
5413 {
5414 "puzzle": "1 4 9 11",
5415 "solutions": [
5416 "(4-1)*11-9",
5417 "9*4-11-1",
5418 "(11+9+4)*1"
5419 ],
5420 "complexity": 2
5421 },
5422 {
5423 "puzzle": "3 4 9 11",
5424 "solutions": [
5425 "(11-9)*4*3",
5426 "(11*9-3)\/4"
5427 ],
5428 "complexity": 2
5429 },
5430 {
5431 "puzzle": "3 7 8 12",
5432 "solutions": [
5433 "(7+3-8)*12",
5434 "12+8+7-3",
5435 "12*8\/(7-3)",
5436 "(7-12\/3)*8"
5437 ],
5438 "complexity": 1
5439 },
5440 {
5441 "puzzle": "4 6 8 12",
5442 "solutions": [
5443 "(6+4-8)*12",
5444 "8*6\/4+12",
5445 "(8+4)*12\/6",
5446 "(12-6)*(8-4)",
5447 "12*4\/(8-6)",
5448 "(6-12\/4)*8",
5449 "(8-12\/6)*4"
5450 ],
5451 "complexity": 2
5452 },
5453 {
5454 "puzzle": "2 4 8 8",
5455 "solutions": [
5456 "4*2+8+8",
5457 "(4-2)*8+8",
5458 "8*4\/2+8",
5459 "(8-2)*(8-4)",
5460 "(8+8-4)*2"
5461 ],
5462 "complexity": 2
5463 },
5464 {
5465 "puzzle": "3 5 6 6",
5466 "solutions": [
5467 "(6+3-5)*6",
5468 "(6+6)*(5-3)"
5469 ],
5470 "complexity": 2
5471 },
5472 {
5473 "puzzle": "1 3 4 13",
5474 "solutions": [
5475 "(13-4-1)*3",
5476 "4*3+13-1"
5477 ],
5478 "complexity": 2
5479 },
5480 {
5481 "puzzle": "1 3 6 13",
5482 "solutions": [
5483 "(13+1-6)*3",
5484 "(13-1)*6\/3"
5485 ],
5486 "complexity": 2
5487 },
5488 {
5489 "puzzle": "2 7 9 10",
5490 "solutions": [
5491 "10+9+7-2",
5492 "(10+2)*(9-7)",
5493 "(10+9-7)*2"
5494 ],
5495 "complexity": 1
5496 },
5497 {
5498 "puzzle": "2 8 9 10",
5499 "solutions": [
5500 "(10+2-9)*8",
5501 "(9+8)*2-10"
5502 ],
5503 "complexity": 2
5504 },
5505 {
5506 "puzzle": "3 6 9 10",
5507 "solutions": [
5508 "(10+3-9)*6",
5509 "(9-3)*(10-6)",
5510 "10*9\/3-6",
5511 "9*6-10*3"
5512 ],
5513 "complexity": 2
5514 },
5515 {
5516 "puzzle": "2 4 8 11",
5517 "solutions": [
5518 "(11-8)*4*2",
5519 "(11-4*2)*8",
5520 "11*2+8\/4",
5521 "11*8\/4+2"
5522 ],
5523 "complexity": 2
5524 },
5525 {
5526 "puzzle": "2 4 8 12",
5527 "solutions": [
5528 "(4+2)*(12-8)",
5529 "(8-4-2)*12",
5530 "8*2+12-4",
5531 "(12+2-8)*4",
5532 "(8-4)*12\/2",
5533 "(12+4)*2-8",
5534 "(12-4)*2+8"
5535 ],
5536 "complexity": 2
5537 },
5538 {
5539 "puzzle": "1 8 11 13",
5540 "solutions": [
5541 "(13+1-11)*8"
5542 ],
5543 "complexity": 2
5544 },
5545 {
5546 "puzzle": "9 10 12 13",
5547 "solutions": [
5548 "13+12+9-10"
5549 ],
5550 "complexity": 1
5551 },
5552 {
5553 "puzzle": "6 8 8 10",
5554 "solutions": [
5555 "8*6\/(10-8)",
5556 "(10+8)*8\/6",
5557 "(10-6)*8-8"
5558 ],
5559 "complexity": 2
5560 },
5561 {
5562 "puzzle": "5 5 8 9",
5563 "solutions": [
5564 "5*5+8-9",
5565 "(8-5)*5+9"
5566 ],
5567 "complexity": 2
5568 },
5569 {
5570 "puzzle": "1 5 5 13",
5571 "solutions": [
5572 "13+5+5+1"
5573 ],
5574 "complexity": 1
5575 },
5576 {
5577 "puzzle": "2 2 4 11",
5578 "solutions": [
5579 "11*2+4-2",
5580 "(4-2)*11+2",
5581 "11*4\/2+2",
5582 "11*2+4\/2"
5583 ],
5584 "complexity": 2
5585 },
5586 {
5587 "puzzle": "4 4 10 12",
5588 "solutions": [
5589 "(10-4-4)*12",
5590 "10*4-12-4",
5591 "(12+4-10)*4"
5592 ],
5593 "complexity": 2
5594 },
5595 {
5596 "puzzle": "2 2 6 10",
5597 "solutions": [
5598 "6*2+10+2",
5599 "10*2+6-2",
5600 "(10-2)*6\/2"
5601 ],
5602 "complexity": 2
5603 },
5604 {
5605 "puzzle": "5 8 9 11",
5606 "solutions": [
5607 "(8-5)*11-9",
5608 "(9+5-11)*8",
5609 "(11-8)*5+9"
5610 ],
5611 "complexity": 2
5612 },
5613 {
5614 "puzzle": "5 8 11 13",
5615 "solutions": [
5616 "(11+5-13)*8",
5617 "(13-5)*(11-8)"
5618 ],
5619 "complexity": 2
5620 },
5621 {
5622 "puzzle": "1 6 11 12",
5623 "solutions": [
5624 "(11+1)*12\/6"
5625 ],
5626 "complexity": 3
5627 },
5628 {
5629 "puzzle": "5 5 8 8",
5630 "solutions": [
5631 "5*5-8\/8"
5632 ],
5633 "complexity": 3
5634 },
5635 {
5636 "puzzle": "5 6 9 10",
5637 "solutions": [
5638 "(9+5-10)*6",
5639 "10*9\/5+6"
5640 ],
5641 "complexity": 2
5642 },
5643 {
5644 "puzzle": "1 3 4 9",
5645 "solutions": [
5646 "(4+1)*3+9",
5647 "(9-3)*4*1",
5648 "9*3+1-4",
5649 "(4-1)*9-3"
5650 ],
5651 "complexity": 2
5652 },
5653 {
5654 "puzzle": "6 6 7 9",
5655 "solutions": [
5656 "(6+6)*(9-7)",
5657 "(7+6-9)*6"
5658 ],
5659 "complexity": 2
5660 },
5661 {
5662 "puzzle": "2 5 10 11",
5663 "solutions": [
5664 "11+10+5-2",
5665 "11*2+10\/5",
5666 "11*10\/5+2"
5667 ],
5668 "complexity": 1
5669 },
5670 {
5671 "puzzle": "1 3 12 12",
5672 "solutions": [
5673 "(12*3-12)*1"
5674 ],
5675 "complexity": 2
5676 },
5677 {
5678 "puzzle": "3 4 5 10",
5679 "solutions": [
5680 "10*4*3\/5",
5681 "(5-3)*10+4"
5682 ],
5683 "complexity": 2
5684 },
5685 {
5686 "puzzle": "2 4 4 4",
5687 "solutions": [
5688 "4*4+4*2",
5689 "(4+4-2)*4",
5690 "(4\/2+4)*4",
5691 "(4+4+4)*2",
5692 "(4*4-4)*2"
5693 ],
5694 "complexity": 2
5695 },
5696 {
5697 "puzzle": "1 2 8 9",
5698 "solutions": [
5699 "9*8\/(2+1)",
5700 "8*2+9-1",
5701 "(9-1)*2+8"
5702 ],
5703 "complexity": 2
5704 },
5705 {
5706 "puzzle": "2 8 8 11",
5707 "solutions": [
5708 "(8\/8+11)*2"
5709 ],
5710 "complexity": 3
5711 },
5712 {
5713 "puzzle": "3 4 7 10",
5714 "solutions": [
5715 "10+7+4+3",
5716 "(10+3-7)*4",
5717 "(10-4)*(7-3)"
5718 ],
5719 "complexity": 1
5720 },
5721 {
5722 "puzzle": "4 4 8 11",
5723 "solutions": [
5724 "(4+4)*(11-8)",
5725 "(11-4-4)*8"
5726 ],
5727 "complexity": 2
5728 },
5729 {
5730 "puzzle": "3 6 8 9",
5731 "solutions": [
5732 "9*8\/(6-3)",
5733 "(9+3-8)*6",
5734 "(9+3)*(8-6)",
5735 "(6-9\/3)*8"
5736 ],
5737 "complexity": 2
5738 },
5739 {
5740 "puzzle": "6 8 10 13",
5741 "solutions": [
5742 "(10+6-13)*8"
5743 ],
5744 "complexity": 2
5745 },
5746 {
5747 "puzzle": "1 2 2 7",
5748 "solutions": [
5749 "(7-1)*(2+2)",
5750 "(7-1)*2*2"
5751 ],
5752 "complexity": 2
5753 },
5754 {
5755 "puzzle": "2 9 10 11",
5756 "solutions": [
5757 "(10+2)*(11-9)",
5758 "(11+10-9)*2"
5759 ],
5760 "complexity": 2
5761 },
5762 {
5763 "puzzle": "4 4 4 9",
5764 "solutions": [
5765 "(9-4)*4+4"
5766 ],
5767 "complexity": 2
5768 },
5769 {
5770 "puzzle": "4 7 8 9",
5771 "solutions": [
5772 "9*8\/(7-4)",
5773 "(8+4)*(9-7)",
5774 "(8+7-9)*4"
5775 ],
5776 "complexity": 2
5777 },
5778 {
5779 "puzzle": "1 4 9 10",
5780 "solutions": [
5781 "10+9+4+1"
5782 ],
5783 "complexity": 1
5784 },
5785 {
5786 "puzzle": "4 4 7 12",
5787 "solutions": [
5788 "(12-4)*(7-4)",
5789 "(7-4)*4+12",
5790 "(12-7)*4+4"
5791 ],
5792 "complexity": 2
5793 },
5794 {
5795 "puzzle": "6 8 8 11",
5796 "solutions": [
5797 "(8+6-11)*8"
5798 ],
5799 "complexity": 2
5800 },
5801 {
5802 "puzzle": "2 3 3 7",
5803 "solutions": [
5804 "(7-3)*3*2",
5805 "(7+3-2)*3",
5806 "(7+2)*3-3"
5807 ],
5808 "complexity": 2
5809 },
5810 {
5811 "puzzle": "5 6 10 13",
5812 "solutions": [
5813 "13+10+6-5"
5814 ],
5815 "complexity": 1
5816 },
5817 {
5818 "puzzle": "1 2 6 13",
5819 "solutions": [
5820 "6*2+13-1"
5821 ],
5822 "complexity": 2
5823 },
5824 {
5825 "puzzle": "1 6 10 13",
5826 "solutions": [
5827 "(13+1-10)*6"
5828 ],
5829 "complexity": 2
5830 },
5831 {
5832 "puzzle": "2 4 7 10",
5833 "solutions": [
5834 "(10-7)*4*2",
5835 "(4-2)*7+10",
5836 "7*4\/2+10",
5837 "(10-2)*(7-4)"
5838 ],
5839 "complexity": 2
5840 },
5841 {
5842 "puzzle": "3 3 7 11",
5843 "solutions": [
5844 "11+7+3+3",
5845 "(3+3)*(11-7)"
5846 ],
5847 "complexity": 1
5848 },
5849 {
5850 "puzzle": "1 6 12 13",
5851 "solutions": [
5852 "(13-1)*12\/6"
5853 ],
5854 "complexity": 3
5855 },
5856 {
5857 "puzzle": "2 9 12 13",
5858 "solutions": [
5859 "(13-9-2)*12",
5860 "(13-9)*12\/2"
5861 ],
5862 "complexity": 2
5863 },
5864 {
5865 "puzzle": "6 6 8 9",
5866 "solutions": [
5867 "(6+6-9)*8",
5868 "(8-6)*9+6"
5869 ],
5870 "complexity": 2
5871 },
5872 {
5873 "puzzle": "3 3 8 12",
5874 "solutions": [
5875 "(3+3)*(12-8)",
5876 "(8-3-3)*12",
5877 "(12-3*3)*8",
5878 "(12-3)*8\/3"
5879 ],
5880 "complexity": 2
5881 },
5882 {
5883 "puzzle": "4 4 6 11",
5884 "solutions": [
5885 "(11-6)*4+4"
5886 ],
5887 "complexity": 2
5888 },
5889 {
5890 "puzzle": "3 11 12 12",
5891 "solutions": [
5892 "(11+3-12)*12"
5893 ],
5894 "complexity": 2
5895 },
5896 {
5897 "puzzle": "2 4 6 6",
5898 "solutions": [
5899 "(6+2-4)*6",
5900 "(6+6)*(4-2)",
5901 "(6+6)*4\/2",
5902 "(6-4\/2)*6",
5903 "(6-4)*6*2",
5904 "(6*2-6)*4"
5905 ],
5906 "complexity": 2
5907 },
5908 {
5909 "puzzle": "2 9 10 13",
5910 "solutions": [
5911 "10*2+13-9",
5912 "(13+9-10)*2"
5913 ],
5914 "complexity": 2
5915 },
5916 {
5917 "puzzle": "5 7 8 8",
5918 "solutions": [
5919 "(7-5)*8+8",
5920 "(8+7)*8\/5"
5921 ],
5922 "complexity": 2
5923 },
5924 {
5925 "puzzle": "6 6 9 11",
5926 "solutions": [
5927 "(6+6)*(11-9)",
5928 "(9+6-11)*6"
5929 ],
5930 "complexity": 2
5931 },
5932 {
5933 "puzzle": "1 3 4 10",
5934 "solutions": [
5935 "(10-4)*(3+1)",
5936 "(10-3-1)*4",
5937 "(3-1)*10+4"
5938 ],
5939 "complexity": 2
5940 },
5941 {
5942 "puzzle": "1 11 13 13",
5943 "solutions": [
5944 "(13-1)*(13-11)"
5945 ],
5946 "complexity": 2
5947 },
5948 {
5949 "puzzle": "2 10 11 13",
5950 "solutions": [
5951 "(10+2)*(13-11)",
5952 "(13+10-11)*2"
5953 ],
5954 "complexity": 2
5955 },
5956 {
5957 "puzzle": "3 6 7 12",
5958 "solutions": [
5959 "(6+3-7)*12",
5960 "(12-6)*(7-3)"
5961 ],
5962 "complexity": 2
5963 },
5964 {
5965 "puzzle": "1 2 7 8",
5966 "solutions": [
5967 "8*2+7+1",
5968 "(7+1)*2+8",
5969 "(7-1)*8\/2"
5970 ],
5971 "complexity": 2
5972 },
5973 {
5974 "puzzle": "2 2 3 13",
5975 "solutions": [
5976 "(13+2-3)*2"
5977 ],
5978 "complexity": 2
5979 },
5980 {
5981 "puzzle": "2 3 10 13",
5982 "solutions": [
5983 "13+10+3-2",
5984 "(13-10\/2)*3"
5985 ],
5986 "complexity": 1
5987 },
5988 {
5989 "puzzle": "1 2 3 3",
5990 "solutions": [
5991 "(3+1)*3*2"
5992 ],
5993 "complexity": 2
5994 },
5995 {
5996 "puzzle": "2 6 6 10",
5997 "solutions": [
5998 "10+6+6+2",
5999 "10*6\/2-6",
6000 "6*6-10-2"
6001 ],
6002 "complexity": 1
6003 },
6004 {
6005 "puzzle": "2 8 11 12",
6006 "solutions": [
6007 "(12+2-11)*8"
6008 ],
6009 "complexity": 2
6010 },
6011 {
6012 "puzzle": "3 7 7 13",
6013 "solutions": [
6014 "13+7+7-3",
6015 "(13-7)*(7-3)"
6016 ],
6017 "complexity": 1
6018 },
6019 {
6020 "puzzle": "2 2 4 13",
6021 "solutions": [
6022 "13*2+2-4",
6023 "(4-2)*13-2",
6024 "13*4\/2-2",
6025 "13*2-4\/2"
6026 ],
6027 "complexity": 2
6028 },
6029 {
6030 "puzzle": "4 5 6 7",
6031 "solutions": [
6032 "(7+5)*(6-4)",
6033 "(7+5-6)*4"
6034 ],
6035 "complexity": 2
6036 },
6037 {
6038 "puzzle": "4 5 8 12",
6039 "solutions": [
6040 "(12-5-4)*8",
6041 "5*4+12-8",
6042 "8*5-12-4",
6043 "(12-4)*(8-5)",
6044 "(8-5)*4+12",
6045 "(12-8)*5+4"
6046 ],
6047 "complexity": 2
6048 },
6049 {
6050 "puzzle": "1 2 3 11",
6051 "solutions": [
6052 "(11-3)*(2+1)",
6053 "(11-2-1)*3",
6054 "11*2+3-1",
6055 "(3-1)*11+2"
6056 ],
6057 "complexity": 2
6058 },
6059 {
6060 "puzzle": "2 4 6 9",
6061 "solutions": [
6062 "(9-6)*4*2",
6063 "(4-2)*9+6",
6064 "9*4\/2+6",
6065 "9*4-6*2",
6066 "(9-6\/2)*4"
6067 ],
6068 "complexity": 2
6069 },
6070 {
6071 "puzzle": "1 4 6 7",
6072 "solutions": [
6073 "(7+1-4)*6"
6074 ],
6075 "complexity": 2
6076 },
6077 {
6078 "puzzle": "4 4 9 11",
6079 "solutions": [
6080 "(11+4-9)*4"
6081 ],
6082 "complexity": 2
6083 },
6084 {
6085 "puzzle": "1 2 9 13",
6086 "solutions": [
6087 "(13+9+2)*1"
6088 ],
6089 "complexity": 2
6090 },
6091 {
6092 "puzzle": "4 6 10 12",
6093 "solutions": [
6094 "12+10+6-4",
6095 "(10-4)*6-12",
6096 "12*10\/4-6",
6097 "12*10\/6+4"
6098 ],
6099 "complexity": 1
6100 },
6101 {
6102 "puzzle": "7 8 8 11",
6103 "solutions": [
6104 "(11-7)*8-8"
6105 ],
6106 "complexity": 2
6107 },
6108 {
6109 "puzzle": "1 2 5 13",
6110 "solutions": [
6111 "(13-5)*(2+1)",
6112 "5*2+13+1"
6113 ],
6114 "complexity": 2
6115 },
6116 {
6117 "puzzle": "4 4 4 11",
6118 "solutions": [
6119 "(11-4)*4-4"
6120 ],
6121 "complexity": 2
6122 },
6123 {
6124 "puzzle": "2 4 7 11",
6125 "solutions": [
6126 "11+7+4+2",
6127 "(4+2)*(11-7)",
6128 "(11+2-7)*4"
6129 ],
6130 "complexity": 1
6131 },
6132 {
6133 "puzzle": "2 4 9 9",
6134 "solutions": [
6135 "9+9+4+2"
6136 ],
6137 "complexity": 1
6138 },
6139 {
6140 "puzzle": "2 6 7 8",
6141 "solutions": [
6142 "(7+2-6)*8",
6143 "(8+7)*2-6"
6144 ],
6145 "complexity": 2
6146 },
6147 {
6148 "puzzle": "2 2 8 10",
6149 "solutions": [
6150 "8*2+10-2",
6151 "10*2+8\/2",
6152 "(10*2-8)*2",
6153 "(10-2)*2+8",
6154 "(10\/2-2)*8"
6155 ],
6156 "complexity": 2
6157 },
6158 {
6159 "puzzle": "6 8 9 13",
6160 "solutions": [
6161 "13+9+8-6",
6162 "(9+8-13)*6"
6163 ],
6164 "complexity": 1
6165 },
6166 {
6167 "puzzle": "1 3 4 7",
6168 "solutions": [
6169 "7*4-3-1",
6170 "(3+1)*7-4",
6171 "7*3+4-1",
6172 "(4-1)*7+3"
6173 ],
6174 "complexity": 2
6175 },
6176 {
6177 "puzzle": "1 3 9 13",
6178 "solutions": [
6179 "13+9+3-1"
6180 ],
6181 "complexity": 1
6182 },
6183 {
6184 "puzzle": "2 3 7 11",
6185 "solutions": [
6186 "(3+2)*7-11",
6187 "3*2+11+7",
6188 "(11-7)*3*2",
6189 "11*3-7-2"
6190 ],
6191 "complexity": 2
6192 },
6193 {
6194 "puzzle": "2 4 10 13",
6195 "solutions": [
6196 "(13-10)*4*2",
6197 "(13+4)*2-10"
6198 ],
6199 "complexity": 2
6200 },
6201 {
6202 "puzzle": "2 9 11 11",
6203 "solutions": [
6204 "11*2+11-9",
6205 "(11-9)*11+2"
6206 ],
6207 "complexity": 2
6208 },
6209 {
6210 "puzzle": "4 5 9 13",
6211 "solutions": [
6212 "5*4+13-9",
6213 "(13-9)*5+4"
6214 ],
6215 "complexity": 2
6216 },
6217 {
6218 "puzzle": "3 9 9 10",
6219 "solutions": [
6220 "(9+9-10)*3"
6221 ],
6222 "complexity": 2
6223 },
6224 {
6225 "puzzle": "4 8 9 11",
6226 "solutions": [
6227 "(8+4)*(11-9)",
6228 "11+9+8-4",
6229 "(9+8-11)*4"
6230 ],
6231 "complexity": 1
6232 },
6233 {
6234 "puzzle": "6 6 8 11",
6235 "solutions": [
6236 "(11-8)*6+6"
6237 ],
6238 "complexity": 2
6239 },
6240 {
6241 "puzzle": "2 8 9 11",
6242 "solutions": [
6243 "8\/2+11+9",
6244 "(11+9-8)*2"
6245 ],
6246 "complexity": 2
6247 },
6248 {
6249 "puzzle": "3 4 7 7",
6250 "solutions": [
6251 "7*3+7-4",
6252 "7*4+3-7",
6253 "(7-3)*7-4",
6254 "(7-4)*7+3"
6255 ],
6256 "complexity": 2
6257 },
6258 {
6259 "puzzle": "6 6 8 10",
6260 "solutions": [
6261 "(6+6)*(10-8)",
6262 "(8+6-10)*6"
6263 ],
6264 "complexity": 2
6265 },
6266 {
6267 "puzzle": "1 2 6 11",
6268 "solutions": [
6269 "6*2+11+1"
6270 ],
6271 "complexity": 2
6272 },
6273 {
6274 "puzzle": "4 11 12 13",
6275 "solutions": [
6276 "(11+4-13)*12",
6277 "12*4-13-11",
6278 "12*4\/(13-11)"
6279 ],
6280 "complexity": 2
6281 },
6282 {
6283 "puzzle": "2 5 7 10",
6284 "solutions": [
6285 "10+7+5+2",
6286 "(10+2)*(7-5)",
6287 "(10+7-5)*2"
6288 ],
6289 "complexity": 1
6290 },
6291 {
6292 "puzzle": "5 5 9 10",
6293 "solutions": [
6294 "5*5+9-10"
6295 ],
6296 "complexity": 2
6297 },
6298 {
6299 "puzzle": "2 3 5 9",
6300 "solutions": [
6301 "(9-5)*3*2",
6302 "9*3+2-5",
6303 "(5-2)*9-3",
6304 "(9*5+3)\/2"
6305 ],
6306 "complexity": 2
6307 },
6308 {
6309 "puzzle": "9 10 11 13",
6310 "solutions": [
6311 "(13+11)*(10-9)",
6312 "(13-10)*11-9"
6313 ],
6314 "complexity": 2
6315 },
6316 {
6317 "puzzle": "1 3 8 8",
6318 "solutions": [
6319 "(3+1)*8-8",
6320 "(3-1)*8+8",
6321 "(8+1)*8\/3"
6322 ],
6323 "complexity": 2
6324 },
6325 {
6326 "puzzle": "4 5 8 8",
6327 "solutions": [
6328 "(5-8\/4)*8",
6329 "(8\/8+5)*4"
6330 ],
6331 "complexity": 3
6332 },
6333 {
6334 "puzzle": "4 4 8 10",
6335 "solutions": [
6336 "(10+4-8)*4",
6337 "(10-4)*(8-4)",
6338 "10*8\/4+4"
6339 ],
6340 "complexity": 2
6341 },
6342 {
6343 "puzzle": "6 8 12 12",
6344 "solutions": [
6345 "(8+6-12)*12",
6346 "8*6-12-12",
6347 "12*8-12*6",
6348 "(12-6)*(12-8)",
6349 "12*12\/8+6"
6350 ],
6351 "complexity": 2
6352 },
6353 {
6354 "puzzle": "3 5 9 12",
6355 "solutions": [
6356 "(5+3)*(12-9)",
6357 "(5-9\/3)*12",
6358 "(12+5-9)*3",
6359 "(9-5)*3+12"
6360 ],
6361 "complexity": 2
6362 },
6363 {
6364 "puzzle": "3 7 10 13",
6365 "solutions": [
6366 "7*3+13-10",
6367 "10*3+7-13",
6368 "(13-10)*7+3"
6369 ],
6370 "complexity": 2
6371 },
6372 {
6373 "puzzle": "4 8 8 12",
6374 "solutions": [
6375 "12+8+8-4",
6376 "12*8\/(8-4)",
6377 "(12-8)*4+8"
6378 ],
6379 "complexity": 1
6380 },
6381 {
6382 "puzzle": "3 10 11 12",
6383 "solutions": [
6384 "(10+3-11)*12"
6385 ],
6386 "complexity": 2
6387 },
6388 {
6389 "puzzle": "4 12 12 12",
6390 "solutions": [
6391 "12*4-12-12",
6392 "12*12\/4-12"
6393 ],
6394 "complexity": 2
6395 },
6396 {
6397 "puzzle": "3 4 4 5",
6398 "solutions": [
6399 "(5+4-3)*4",
6400 "4*4+5+3"
6401 ],
6402 "complexity": 2
6403 },
6404 {
6405 "puzzle": "1 2 4 5",
6406 "solutions": [
6407 "(5+2-1)*4",
6408 "(4+2)*(5-1)"
6409 ],
6410 "complexity": 2
6411 },
6412 {
6413 "puzzle": "4 4 8 13",
6414 "solutions": [
6415 "(4*4-13)*8",
6416 "(13-8)*4+4"
6417 ],
6418 "complexity": 2
6419 },
6420 {
6421 "puzzle": "5 6 6 10",
6422 "solutions": [
6423 "(10-5)*6-6",
6424 "(6+6)*10\/5",
6425 "(6-10\/5)*6"
6426 ],
6427 "complexity": 2
6428 },
6429 {
6430 "puzzle": "2 3 4 13",
6431 "solutions": [
6432 "4*2+13+3",
6433 "(13+3-4)*2",
6434 "(13-3)*2+4"
6435 ],
6436 "complexity": 2
6437 },
6438 {
6439 "puzzle": "1 1 3 10",
6440 "solutions": [
6441 "(10-1-1)*3"
6442 ],
6443 "complexity": 2
6444 },
6445 {
6446 "puzzle": "3 5 6 9",
6447 "solutions": [
6448 "(5+3)*(9-6)",
6449 "(5-3)*9+6",
6450 "(6-3)*5+9",
6451 "6*5+3-9",
6452 "(9-3)*5-6",
6453 "(6+5)*3-9",
6454 "(9+5-6)*3"
6455 ],
6456 "complexity": 2
6457 },
6458 {
6459 "puzzle": "1 4 5 10",
6460 "solutions": [
6461 "(10+1-5)*4",
6462 "(10-4)*(5-1)"
6463 ],
6464 "complexity": 2
6465 },
6466 {
6467 "puzzle": "1 4 6 9",
6468 "solutions": [
6469 "(9-4-1)*6"
6470 ],
6471 "complexity": 2
6472 },
6473 {
6474 "puzzle": "1 5 5 9",
6475 "solutions": [
6476 "(5+1)*(9-5)"
6477 ],
6478 "complexity": 2
6479 },
6480 {
6481 "puzzle": "2 2 5 6",
6482 "solutions": [
6483 "(5-2\/2)*6",
6484 "(6+2)*(5-2)",
6485 "(6+5)*2+2"
6486 ],
6487 "complexity": 2
6488 },
6489 {
6490 "puzzle": "7 8 10 13",
6491 "solutions": [
6492 "13+10+8-7"
6493 ],
6494 "complexity": 1
6495 },
6496 {
6497 "puzzle": "2 5 8 13",
6498 "solutions": [
6499 "(13-5*2)*8",
6500 "13+8+5-2",
6501 "8*2+13-5",
6502 "(13+2)*8\/5",
6503 "(13-5)*2+8"
6504 ],
6505 "complexity": 1
6506 },
6507 {
6508 "puzzle": "1 3 5 10",
6509 "solutions": [
6510 "10*3-5-1",
6511 "5*3+10-1"
6512 ],
6513 "complexity": 2
6514 },
6515 {
6516 "puzzle": "3 9 10 12",
6517 "solutions": [
6518 "(9+3)*(12-10)",
6519 "(9+3-10)*12"
6520 ],
6521 "complexity": 2
6522 },
6523 {
6524 "puzzle": "1 3 3 10",
6525 "solutions": [
6526 "(10+1-3)*3",
6527 "(10-1)*3-3"
6528 ],
6529 "complexity": 2
6530 },
6531 {
6532 "puzzle": "2 2 3 6",
6533 "solutions": [
6534 "(2\/2+3)*6",
6535 "(6-2)*3*2",
6536 "(3*2-2)*6",
6537 "(3*2+6)*2"
6538 ],
6539 "complexity": 2
6540 },
6541 {
6542 "puzzle": "2 11 12 13",
6543 "solutions": [
6544 "(13+11-12)*2",
6545 "(13+11)\/2+12"
6546 ],
6547 "complexity": 2
6548 },
6549 {
6550 "puzzle": "1 2 4 9",
6551 "solutions": [
6552 "(9-2-1)*4",
6553 "(9+4-1)*2",
6554 "(9+1)*2+4"
6555 ],
6556 "complexity": 2
6557 },
6558 {
6559 "puzzle": "3 5 6 7",
6560 "solutions": [
6561 "(7+5)*6\/3",
6562 "(7+6-5)*3"
6563 ],
6564 "complexity": 2
6565 },
6566 {
6567 "puzzle": "4 5 5 9",
6568 "solutions": [
6569 "5*4+9-5",
6570 "(9-5)*5+4"
6571 ],
6572 "complexity": 2
6573 },
6574 {
6575 "puzzle": "2 2 5 7",
6576 "solutions": [
6577 "7*2+5*2"
6578 ],
6579 "complexity": 2
6580 },
6581 {
6582 "puzzle": "2 3 9 9",
6583 "solutions": [
6584 "3*2+9+9",
6585 "(9+2)*3-9",
6586 "9*2+9-3",
6587 "(9\/3+9)*2"
6588 ],
6589 "complexity": 2
6590 },
6591 {
6592 "puzzle": "3 6 12 13",
6593 "solutions": [
6594 "(13+3-12)*6"
6595 ],
6596 "complexity": 2
6597 },
6598 {
6599 "puzzle": "5 5 6 7",
6600 "solutions": [
6601 "5*5+6-7",
6602 "7*5-6-5"
6603 ],
6604 "complexity": 2
6605 },
6606 {
6607 "puzzle": "6 6 8 13",
6608 "solutions": [
6609 "(13-8)*6-6"
6610 ],
6611 "complexity": 2
6612 },
6613 {
6614 "puzzle": "6 6 6 12",
6615 "solutions": [
6616 "(6+6)*12\/6",
6617 "(6-12\/6)*6"
6618 ],
6619 "complexity": 3
6620 },
6621 {
6622 "puzzle": "4 7 10 10",
6623 "solutions": [
6624 "(7-10\/10)*4"
6625 ],
6626 "complexity": 3
6627 },
6628 {
6629 "puzzle": "6 8 11 13",
6630 "solutions": [
6631 "8*6-13-11",
6632 "8*6\/(13-11)"
6633 ],
6634 "complexity": 2
6635 },
6636 {
6637 "puzzle": "1 5 9 11",
6638 "solutions": [
6639 "11+9+5-1"
6640 ],
6641 "complexity": 1
6642 },
6643 {
6644 "puzzle": "8 8 9 13",
6645 "solutions": [
6646 "(13-9)*8-8"
6647 ],
6648 "complexity": 2
6649 },
6650 {
6651 "puzzle": "1 5 6 8",
6652 "solutions": [
6653 "(8+1-5)*6"
6654 ],
6655 "complexity": 2
6656 },
6657 {
6658 "puzzle": "2 3 6 10",
6659 "solutions": [
6660 "(10-6)*3*2",
6661 "(10-3*2)*6",
6662 "(10+6)*3\/2",
6663 "(10+2)*6\/3",
6664 "(10-2)*(6-3)",
6665 "(6\/3+10)*2"
6666 ],
6667 "complexity": 2
6668 },
6669 {
6670 "puzzle": "3 4 7 11",
6671 "solutions": [
6672 "(11+7)*4\/3",
6673 "(11-3)*(7-4)",
6674 "(11+4-7)*3"
6675 ],
6676 "complexity": 2
6677 },
6678 {
6679 "puzzle": "4 4 5 10",
6680 "solutions": [
6681 "(10-5)*4+4",
6682 "(10\/5+4)*4"
6683 ],
6684 "complexity": 2
6685 },
6686 {
6687 "puzzle": "2 2 3 11",
6688 "solutions": [
6689 "(11+3-2)*2"
6690 ],
6691 "complexity": 2
6692 },
6693 {
6694 "puzzle": "2 5 8 9",
6695 "solutions": [
6696 "9+8+5+2",
6697 "9*8\/(5-2)",
6698 "(8-2)*(9-5)",
6699 "(9+8-5)*2"
6700 ],
6701 "complexity": 1
6702 },
6703 {
6704 "puzzle": "2 10 11 11",
6705 "solutions": [
6706 "(11+11-10)*2"
6707 ],
6708 "complexity": 2
6709 },
6710 {
6711 "puzzle": "2 2 5 11",
6712 "solutions": [
6713 "(11-5)*(2+2)",
6714 "(11-5)*2*2"
6715 ],
6716 "complexity": 2
6717 },
6718 {
6719 "puzzle": "5 10 10 12",
6720 "solutions": [
6721 "12*10\/(10-5)",
6722 "10\/5+12+10"
6723 ],
6724 "complexity": 3
6725 },
6726 {
6727 "puzzle": "2 3 4 11",
6728 "solutions": [
6729 "(11-3-2)*4",
6730 "(11+4-3)*2",
6731 "(11+3)*2-4"
6732 ],
6733 "complexity": 2
6734 },
6735 {
6736 "puzzle": "1 5 10 13",
6737 "solutions": [
6738 "(13-1)*10\/5"
6739 ],
6740 "complexity": 3
6741 },
6742 {
6743 "puzzle": "1 3 5 7",
6744 "solutions": [
6745 "(7+5)*(3-1)",
6746 "(5+1)*(7-3)"
6747 ],
6748 "complexity": 2
6749 },
6750 {
6751 "puzzle": "3 5 5 9",
6752 "solutions": [
6753 "(9-5\/5)*3"
6754 ],
6755 "complexity": 3
6756 },
6757 {
6758 "puzzle": "7 12 12 13",
6759 "solutions": [
6760 "12*12\/(13-7)",
6761 "(13*12+12)\/7"
6762 ],
6763 "complexity": 3
6764 },
6765 {
6766 "puzzle": "4 7 7 11",
6767 "solutions": [
6768 "7*4+7-11",
6769 "(11-7)*7-4"
6770 ],
6771 "complexity": 2
6772 },
6773 {
6774 "puzzle": "5 7 8 9",
6775 "solutions": [
6776 "(7+5-9)*8",
6777 "8*5-9-7"
6778 ],
6779 "complexity": 2
6780 },
6781 {
6782 "puzzle": "8 8 8 13",
6783 "solutions": [
6784 "(8+8-13)*8"
6785 ],
6786 "complexity": 2
6787 },
6788 {
6789 "puzzle": "3 7 8 9",
6790 "solutions": [
6791 "(9+7-8)*3"
6792 ],
6793 "complexity": 2
6794 },
6795 {
6796 "puzzle": "2 3 8 12",
6797 "solutions": [
6798 "(12-8)*3*2",
6799 "(8-3*2)*12",
6800 "8*3\/2+12",
6801 "(8-2)*12\/3",
6802 "(12-8\/2)*3",
6803 "(12\/2-3)*8",
6804 "(8*3-12)*2",
6805 "(12\/3+8)*2"
6806 ],
6807 "complexity": 2
6808 },
6809 {
6810 "puzzle": "2 8 8 10",
6811 "solutions": [
6812 "10+8+8-2",
6813 "(8-10\/2)*8"
6814 ],
6815 "complexity": 1
6816 },
6817 {
6818 "puzzle": "3 3 6 11",
6819 "solutions": [
6820 "11*3-6-3",
6821 "(11+3-6)*3",
6822 "(11-3)*(6-3)"
6823 ],
6824 "complexity": 2
6825 },
6826 {
6827 "puzzle": "5 6 7 12",
6828 "solutions": [
6829 "(7+5)*12\/6",
6830 "(7-5)*6+12"
6831 ],
6832 "complexity": 2
6833 },
6834 {
6835 "puzzle": "3 4 6 12",
6836 "solutions": [
6837 "12*4*3\/6",
6838 "(12+6)*4\/3",
6839 "(6+3)*4-12",
6840 "(6*3-12)*4",
6841 "(12-4)*(6-3)",
6842 "(6-3)*4+12",
6843 "(4-6\/3)*12"
6844 ],
6845 "complexity": 2
6846 },
6847 {
6848 "puzzle": "4 5 10 13",
6849 "solutions": [
6850 "13+10+5-4"
6851 ],
6852 "complexity": 1
6853 },
6854 {
6855 "puzzle": "2 3 4 4",
6856 "solutions": [
6857 "(3+2)*4+4",
6858 "4*4*3\/2",
6859 "(4-2)*4*3"
6860 ],
6861 "complexity": 2
6862 },
6863 {
6864 "puzzle": "1 2 7 9",
6865 "solutions": [
6866 "9*2+7-1",
6867 "7*2+9+1"
6868 ],
6869 "complexity": 2
6870 },
6871 {
6872 "puzzle": "2 2 6 8",
6873 "solutions": [
6874 "(8-2-2)*6",
6875 "(8-2*2)*6",
6876 "8*2+6+2",
6877 "(6+2)*2+8",
6878 "(8+6-2)*2",
6879 "(8-2)*(6-2)"
6880 ],
6881 "complexity": 2
6882 },
6883 {
6884 "puzzle": "1 1 4 10",
6885 "solutions": [
6886 "(1+1)*10+4"
6887 ],
6888 "complexity": 2
6889 },
6890 {
6891 "puzzle": "5 8 9 12",
6892 "solutions": [
6893 "12+9+8-5",
6894 "12*8\/(9-5)"
6895 ],
6896 "complexity": 1
6897 },
6898 {
6899 "puzzle": "2 3 3 9",
6900 "solutions": [
6901 "(3+2)*3+9",
6902 "(9+2-3)*3",
6903 "9*2+3+3",
6904 "(9-2)*3+3"
6905 ],
6906 "complexity": 2
6907 },
6908 {
6909 "puzzle": "3 3 3 9",
6910 "solutions": [
6911 "(9-3\/3)*3"
6912 ],
6913 "complexity": 3
6914 },
6915 {
6916 "puzzle": "3 9 11 12",
6917 "solutions": [
6918 "(11-3)*(12-9)",
6919 "12\/3+11+9",
6920 "(11+9-12)*3"
6921 ],
6922 "complexity": 2
6923 },
6924 {
6925 "puzzle": "1 9 11 13",
6926 "solutions": [
6927 "(13-1)*(11-9)"
6928 ],
6929 "complexity": 2
6930 },
6931 {
6932 "puzzle": "5 11 12 12",
6933 "solutions": [
6934 "12*12\/(11-5)",
6935 "(12*11-12)\/5"
6936 ],
6937 "complexity": 3
6938 },
6939 {
6940 "puzzle": "3 7 7 10",
6941 "solutions": [
6942 "7*3+10-7",
6943 "(10-7)*7+3"
6944 ],
6945 "complexity": 2
6946 },
6947 {
6948 "puzzle": "4 5 7 12",
6949 "solutions": [
6950 "(5+4-7)*12",
6951 "12*4\/(7-5)"
6952 ],
6953 "complexity": 2
6954 },
6955 {
6956 "puzzle": "2 4 4 7",
6957 "solutions": [
6958 "(7-4)*4*2",
6959 "(7-2)*4+4"
6960 ],
6961 "complexity": 2
6962 },
6963 {
6964 "puzzle": "3 3 4 9",
6965 "solutions": [
6966 "4*3+9+3",
6967 "(9+3-4)*3",
6968 "(9\/3+3)*4"
6969 ],
6970 "complexity": 2
6971 },
6972 {
6973 "puzzle": "3 4 5 9",
6974 "solutions": [
6975 "(5*3-9)*4",
6976 "(9+4-5)*3"
6977 ],
6978 "complexity": 2
6979 },
6980 {
6981 "puzzle": "3 4 6 10",
6982 "solutions": [
6983 "6*3+10-4",
6984 "10*6\/3+4",
6985 "(10+4-6)*3",
6986 "(10-4)*3+6"
6987 ],
6988 "complexity": 2
6989 },
6990 {
6991 "puzzle": "5 9 9 11",
6992 "solutions": [
6993 "11+9+9-5"
6994 ],
6995 "complexity": 1
6996 },
6997 {
6998 "puzzle": "4 5 5 7",
6999 "solutions": [
7000 "(7-5\/5)*4"
7001 ],
7002 "complexity": 3
7003 },
7004 {
7005 "puzzle": "3 8 9 12",
7006 "solutions": [
7007 "(8+3-9)*12",
7008 "(9-3)*(12-8)"
7009 ],
7010 "complexity": 2
7011 },
7012 {
7013 "puzzle": "2 5 6 10",
7014 "solutions": [
7015 "(5-2)*10-6",
7016 "10*6*2\/5",
7017 "(10+5)*2-6",
7018 "(10\/5+2)*6"
7019 ],
7020 "complexity": 2
7021 },
7022 {
7023 "puzzle": "1 6 9 10",
7024 "solutions": [
7025 "10+9+6-1"
7026 ],
7027 "complexity": 1
7028 },
7029 {
7030 "puzzle": "6 6 6 8",
7031 "solutions": [
7032 "(6+6)*(8-6)",
7033 "(6+6-8)*6"
7034 ],
7035 "complexity": 2
7036 },
7037 {
7038 "puzzle": "2 7 9 13",
7039 "solutions": [
7040 "9*2+13-7",
7041 "13*2+7-9",
7042 "(9-7)*13-2"
7043 ],
7044 "complexity": 2
7045 },
7046 {
7047 "puzzle": "4 7 11 12",
7048 "solutions": [
7049 "(11+7-12)*4"
7050 ],
7051 "complexity": 2
7052 },
7053 {
7054 "puzzle": "2 3 6 11",
7055 "solutions": [
7056 "(11-3)*6\/2",
7057 "(11-6\/2)*3",
7058 "11*2+6\/3",
7059 "11*6\/3+2"
7060 ],
7061 "complexity": 3
7062 },
7063 {
7064 "puzzle": "4 7 8 13",
7065 "solutions": [
7066 "13+8+7-4",
7067 "(13-7)*(8-4)"
7068 ],
7069 "complexity": 1
7070 },
7071 {
7072 "puzzle": "2 3 8 11",
7073 "solutions": [
7074 "11+8+3+2",
7075 "8*2+11-3",
7076 "(11-2)*8\/3",
7077 "(11-3)*2+8"
7078 ],
7079 "complexity": 1
7080 },
7081 {
7082 "puzzle": "5 6 8 9",
7083 "solutions": [
7084 "(8+5-9)*6",
7085 "(9+6)*8\/5"
7086 ],
7087 "complexity": 2
7088 },
7089 {
7090 "puzzle": "2 6 8 8",
7091 "solutions": [
7092 "8+8+6+2",
7093 "(6-2)*8-8",
7094 "(8-8\/2)*6"
7095 ],
7096 "complexity": 1
7097 },
7098 {
7099 "puzzle": "2 4 5 9",
7100 "solutions": [
7101 "(4+2)*(9-5)",
7102 "(9+2-5)*4",
7103 "(9+5)*2-4"
7104 ],
7105 "complexity": 2
7106 },
7107 {
7108 "puzzle": "3 3 5 9",
7109 "solutions": [
7110 "(3+3)*(9-5)",
7111 "(5+3)*9\/3",
7112 "(9+3)*(5-3)",
7113 "(9\/3+5)*3"
7114 ],
7115 "complexity": 2
7116 },
7117 {
7118 "puzzle": "6 6 8 12",
7119 "solutions": [
7120 "8*6*6\/12",
7121 "12*6-8*6",
7122 "(8-6)*6+12",
7123 "(12+6)*8\/6"
7124 ],
7125 "complexity": 2
7126 },
7127 {
7128 "puzzle": "1 7 12 12",
7129 "solutions": [
7130 "12*12\/(7-1)"
7131 ],
7132 "complexity": 3
7133 },
7134 {
7135 "puzzle": "4 5 7 11",
7136 "solutions": [
7137 "5*4+11-7",
7138 "(11-7)*5+4"
7139 ],
7140 "complexity": 2
7141 },
7142 {
7143 "puzzle": "2 2 4 9",
7144 "solutions": [
7145 "9*2+4+2",
7146 "(9+4)*2-2"
7147 ],
7148 "complexity": 2
7149 },
7150 {
7151 "puzzle": "3 5 9 13",
7152 "solutions": [
7153 "13+9+5-3",
7154 "(13-5)*9\/3",
7155 "(13*9+3)\/5"
7156 ],
7157 "complexity": 1
7158 },
7159 {
7160 "puzzle": "3 7 8 13",
7161 "solutions": [
7162 "(13-7-3)*8",
7163 "13*3-8-7"
7164 ],
7165 "complexity": 2
7166 },
7167 {
7168 "puzzle": "3 3 6 9",
7169 "solutions": [
7170 "3*3+9+6",
7171 "6*3+9-3",
7172 "9*3+3-6",
7173 "(6-3)*9-3",
7174 "(9+3)*6\/3",
7175 "(9-3)*3+6"
7176 ],
7177 "complexity": 2
7178 },
7179 {
7180 "puzzle": "4 4 5 7",
7181 "solutions": [
7182 "(7+4-5)*4"
7183 ],
7184 "complexity": 2
7185 },
7186 {
7187 "puzzle": "4 9 12 12",
7188 "solutions": [
7189 "(12-4)*(12-9)",
7190 "12\/4+12+9",
7191 "(12*9-12)\/4",
7192 "(12-9)*4+12"
7193 ],
7194 "complexity": 2
7195 },
7196 {
7197 "puzzle": "1 5 6 13",
7198 "solutions": [
7199 "(13+6+5)*1"
7200 ],
7201 "complexity": 2
7202 },
7203 {
7204 "puzzle": "1 5 5 11",
7205 "solutions": [
7206 "(11-5)*(5-1)"
7207 ],
7208 "complexity": 2
7209 },
7210 {
7211 "puzzle": "3 3 7 9",
7212 "solutions": [
7213 "7*3+9\/3",
7214 "(9-3)*(7-3)",
7215 "9*7\/3+3"
7216 ],
7217 "complexity": 2
7218 },
7219 {
7220 "puzzle": "2 3 4 10",
7221 "solutions": [
7222 "10*3-4-2",
7223 "(10+2-4)*3",
7224 "(10-4\/2)*3",
7225 "4*3+10+2",
7226 "(4+3)*2+10"
7227 ],
7228 "complexity": 2
7229 },
7230 {
7231 "puzzle": "2 4 6 13",
7232 "solutions": [
7233 "13*2+4-6",
7234 "(6-4)*13-2",
7235 "(13-4)*2+6"
7236 ],
7237 "complexity": 2
7238 },
7239 {
7240 "puzzle": "3 8 8 11",
7241 "solutions": [
7242 "11+8+8-3"
7243 ],
7244 "complexity": 1
7245 },
7246 {
7247 "puzzle": "5 6 9 12",
7248 "solutions": [
7249 "(6+5-9)*12",
7250 "(12-6)*(9-5)"
7251 ],
7252 "complexity": 2
7253 },
7254 {
7255 "puzzle": "6 6 8 8",
7256 "solutions": [
7257 "8*6\/(8-6)"
7258 ],
7259 "complexity": 3
7260 },
7261 {
7262 "puzzle": "4 9 9 10",
7263 "solutions": [
7264 "10+9+9-4"
7265 ],
7266 "complexity": 1
7267 },
7268 {
7269 "puzzle": "6 7 9 12",
7270 "solutions": [
7271 "(9+7-12)*6",
7272 "(9-7)*6+12"
7273 ],
7274 "complexity": 2
7275 },
7276 {
7277 "puzzle": "2 3 9 13",
7278 "solutions": [
7279 "(13-9)*3*2",
7280 "(13-2)*3-9",
7281 "(13*3+9)\/2"
7282 ],
7283 "complexity": 2
7284 },
7285 {
7286 "puzzle": "6 9 10 11",
7287 "solutions": [
7288 "11+10+9-6",
7289 "10*9-11*6"
7290 ],
7291 "complexity": 1
7292 },
7293 {
7294 "puzzle": "3 3 3 5",
7295 "solutions": [
7296 "5*3+3*3"
7297 ],
7298 "complexity": 2
7299 },
7300 {
7301 "puzzle": "2 4 5 11",
7302 "solutions": [
7303 "4*2+11+5",
7304 "(11+5-4)*2"
7305 ],
7306 "complexity": 2
7307 },
7308 {
7309 "puzzle": "1 2 5 10",
7310 "solutions": [
7311 "10*2+5-1",
7312 "10*5\/2-1"
7313 ],
7314 "complexity": 2
7315 },
7316 {
7317 "puzzle": "1 7 9 10",
7318 "solutions": [
7319 "(9-1)*(10-7)"
7320 ],
7321 "complexity": 2
7322 },
7323 {
7324 "puzzle": "6 12 13 13",
7325 "solutions": [
7326 "13+13-12\/6"
7327 ],
7328 "complexity": 3
7329 },
7330 {
7331 "puzzle": "3 3 6 10",
7332 "solutions": [
7333 "(3+3)*(10-6)",
7334 "(10-3-3)*6",
7335 "(6*3-10)*3",
7336 "(10-6\/3)*3"
7337 ],
7338 "complexity": 2
7339 },
7340 {
7341 "puzzle": "5 7 9 13",
7342 "solutions": [
7343 "13+9+7-5",
7344 "(13-7)*(9-5)"
7345 ],
7346 "complexity": 1
7347 },
7348 {
7349 "puzzle": "4 4 6 13",
7350 "solutions": [
7351 "(13-6)*4-4"
7352 ],
7353 "complexity": 2
7354 },
7355 {
7356 "puzzle": "6 11 11 12",
7357 "solutions": [
7358 "12\/6+11+11"
7359 ],
7360 "complexity": 3
7361 },
7362 {
7363 "puzzle": "3 6 9 11",
7364 "solutions": [
7365 "(6-3)*11-9",
7366 "(11-3)*(9-6)",
7367 "(11+6-9)*3",
7368 "(11-6)*3+9"
7369 ],
7370 "complexity": 2
7371 },
7372 {
7373 "puzzle": "1 3 3 11",
7374 "solutions": [
7375 "(11-3)*3*1"
7376 ],
7377 "complexity": 2
7378 },
7379 {
7380 "puzzle": "6 10 12 12",
7381 "solutions": [
7382 "12\/6+12+10",
7383 "(12-10)*6+12"
7384 ],
7385 "complexity": 2
7386 },
7387 {
7388 "puzzle": "7 8 9 13",
7389 "solutions": [
7390 "(9+7-13)*8"
7391 ],
7392 "complexity": 2
7393 },
7394 {
7395 "puzzle": "3 4 5 6",
7396 "solutions": [
7397 "(5+3-4)*6"
7398 ],
7399 "complexity": 2
7400 },
7401 {
7402 "puzzle": "4 9 11 12",
7403 "solutions": [
7404 "(9+4-11)*12",
7405 "12*11\/4-9",
7406 "12*4\/(11-9)"
7407 ],
7408 "complexity": 2
7409 },
7410 {
7411 "puzzle": "6 8 9 11",
7412 "solutions": [
7413 "8*6\/(11-9)"
7414 ],
7415 "complexity": 3
7416 },
7417 {
7418 "puzzle": "3 4 8 11",
7419 "solutions": [
7420 "(11+3-8)*4",
7421 "8*4+3-11",
7422 "(11-3)*4-8"
7423 ],
7424 "complexity": 2
7425 },
7426 {
7427 "puzzle": "4 6 7 10",
7428 "solutions": [
7429 "(6-4)*7+10",
7430 "7*4+6-10",
7431 "(7-4)*10-6",
7432 "(10-6)*7-4"
7433 ],
7434 "complexity": 2
7435 },
7436 {
7437 "puzzle": "5 5 5 9",
7438 "solutions": [
7439 "9+5+5+5"
7440 ],
7441 "complexity": 1
7442 },
7443 {
7444 "puzzle": "2 6 12 12",
7445 "solutions": [
7446 "12*6\/2-12",
7447 "12\/2+12+6",
7448 "(12+6)*2-12",
7449 "(12-6)*2+12"
7450 ],
7451 "complexity": 2
7452 },
7453 {
7454 "puzzle": "3 4 4 13",
7455 "solutions": [
7456 "13+4+4+3",
7457 "(13-4-3)*4"
7458 ],
7459 "complexity": 1
7460 },
7461 {
7462 "puzzle": "4 5 6 10",
7463 "solutions": [
7464 "5*4+10-6",
7465 "6*5+4-10",
7466 "(10-4)*5-6",
7467 "(10-6)*5+4"
7468 ],
7469 "complexity": 2
7470 },
7471 {
7472 "puzzle": "1 8 10 11",
7473 "solutions": [
7474 "(11+1)*(10-8)"
7475 ],
7476 "complexity": 2
7477 },
7478 {
7479 "puzzle": "3 3 6 13",
7480 "solutions": [
7481 "(13-3*3)*6",
7482 "(13-3)*3-6",
7483 "(13-6)*3+3"
7484 ],
7485 "complexity": 2
7486 },
7487 {
7488 "puzzle": "1 11 11 13",
7489 "solutions": [
7490 "(11+1)*(13-11)"
7491 ],
7492 "complexity": 2
7493 },
7494 {
7495 "puzzle": "6 7 8 9",
7496 "solutions": [
7497 "8*6\/(9-7)"
7498 ],
7499 "complexity": 3
7500 },
7501 {
7502 "puzzle": "2 4 12 12",
7503 "solutions": [
7504 "12*12\/(4+2)",
7505 "12*4-12*2",
7506 "(12\/2-4)*12",
7507 "(12-12\/2)*4"
7508 ],
7509 "complexity": 2
7510 },
7511 {
7512 "puzzle": "1 2 4 7",
7513 "solutions": [
7514 "(7+1-2)*4",
7515 "(7+4+1)*2"
7516 ],
7517 "complexity": 2
7518 },
7519 {
7520 "puzzle": "2 5 8 11",
7521 "solutions": [
7522 "(11-5)*8\/2",
7523 "(11+5)*2-8"
7524 ],
7525 "complexity": 2
7526 },
7527 {
7528 "puzzle": "2 3 6 9",
7529 "solutions": [
7530 "(9-3-2)*6",
7531 "(6+2)*9\/3",
7532 "6*2+9+3",
7533 "(9-3)*(6-2)",
7534 "9*6\/2-3",
7535 "9*3-6\/2",
7536 "(9+6-3)*2"
7537 ],
7538 "complexity": 2
7539 },
7540 {
7541 "puzzle": "5 5 6 11",
7542 "solutions": [
7543 "6*5+5-11",
7544 "(11-5)*5-6"
7545 ],
7546 "complexity": 2
7547 },
7548 {
7549 "puzzle": "6 8 9 9",
7550 "solutions": [
7551 "(9+9)*8\/6",
7552 "9*8\/(9-6)"
7553 ],
7554 "complexity": 3
7555 },
7556 {
7557 "puzzle": "1 2 8 13",
7558 "solutions": [
7559 "13+8+2+1"
7560 ],
7561 "complexity": 1
7562 },
7563 {
7564 "puzzle": "3 3 7 12",
7565 "solutions": [
7566 "(3*3-7)*12",
7567 "(12+3-7)*3",
7568 "(7-3)*3+12"
7569 ],
7570 "complexity": 2
7571 },
7572 {
7573 "puzzle": "1 5 10 11",
7574 "solutions": [
7575 "(11+1)*10\/5"
7576 ],
7577 "complexity": 3
7578 },
7579 {
7580 "puzzle": "2 4 8 9",
7581 "solutions": [
7582 "(9-4-2)*8"
7583 ],
7584 "complexity": 2
7585 },
7586 {
7587 "puzzle": "1 4 5 13",
7588 "solutions": [
7589 "(13-5)*(4-1)"
7590 ],
7591 "complexity": 2
7592 },
7593 {
7594 "puzzle": "3 4 6 11",
7595 "solutions": [
7596 "11+6+4+3",
7597 "(11-4-3)*6"
7598 ],
7599 "complexity": 1
7600 },
7601 {
7602 "puzzle": "4 6 6 9",
7603 "solutions": [
7604 "(6-4)*9+6",
7605 "9*4-6-6",
7606 "(9-4)*6-6"
7607 ],
7608 "complexity": 2
7609 },
7610 {
7611 "puzzle": "1 3 5 9",
7612 "solutions": [
7613 "(9-3)*(5-1)",
7614 "(5*3+9)*1"
7615 ],
7616 "complexity": 2
7617 },
7618 {
7619 "puzzle": "1 5 9 13",
7620 "solutions": [
7621 "(5+1)*(13-9)"
7622 ],
7623 "complexity": 2
7624 },
7625 {
7626 "puzzle": "4 5 7 9",
7627 "solutions": [
7628 "7*4+5-9",
7629 "(7-4)*5+9",
7630 "9*4-7-5",
7631 "(9-5)*7-4"
7632 ],
7633 "complexity": 2
7634 },
7635 {
7636 "puzzle": "5 5 8 10",
7637 "solutions": [
7638 "(10+5)*8\/5",
7639 "(5-10\/5)*8"
7640 ],
7641 "complexity": 3
7642 },
7643 {
7644 "puzzle": "6 7 8 11",
7645 "solutions": [
7646 "(11+7)*8\/6",
7647 "(8+7-11)*6"
7648 ],
7649 "complexity": 2
7650 },
7651 {
7652 "puzzle": "1 4 4 8",
7653 "solutions": [
7654 "(8-1)*4-4",
7655 "(4*4+8)*1"
7656 ],
7657 "complexity": 2
7658 },
7659 {
7660 "puzzle": "2 4 6 12",
7661 "solutions": [
7662 "12+6+4+2",
7663 "(4+2)*6-12",
7664 "(4*2-6)*12",
7665 "(12-4*2)*6",
7666 "(4-2)*6+12",
7667 "6*4\/2+12",
7668 "(6+2)*12\/4",
7669 "(12-4)*6\/2",
7670 "(6*4-12)*2"
7671 ],
7672 "complexity": 1
7673 },
7674 {
7675 "puzzle": "3 6 9 12",
7676 "solutions": [
7677 "12*6*3\/9",
7678 "12+9+6-3",
7679 "(9+3)*12\/6",
7680 "(9-3)*6-12"
7681 ],
7682 "complexity": 1
7683 },
7684 {
7685 "puzzle": "5 6 8 12",
7686 "solutions": [
7687 "(12+8)*6\/5",
7688 "12*6\/(8-5)",
7689 "(5-12\/6)*8"
7690 ],
7691 "complexity": 3
7692 },
7693 {
7694 "puzzle": "3 3 6 7",
7695 "solutions": [
7696 "7*3+6-3",
7697 "(6-3)*7+3",
7698 "(7+3)*3-6"
7699 ],
7700 "complexity": 2
7701 },
7702 {
7703 "puzzle": "4 7 9 13",
7704 "solutions": [
7705 "7*4+9-13",
7706 "(13-9)*7-4"
7707 ],
7708 "complexity": 2
7709 },
7710 {
7711 "puzzle": "6 9 12 13",
7712 "solutions": [
7713 "(9+6-13)*12",
7714 "(12-6)*(13-9)",
7715 "12\/6+13+9"
7716 ],
7717 "complexity": 2
7718 },
7719 {
7720 "puzzle": "2 2 7 12",
7721 "solutions": [
7722 "7*2+12-2"
7723 ],
7724 "complexity": 2
7725 },
7726 {
7727 "puzzle": "2 4 6 7",
7728 "solutions": [
7729 "(6+2)*(7-4)",
7730 "7*4+2-6",
7731 "(6-2)*7-4",
7732 "7*2+6+4"
7733 ],
7734 "complexity": 2
7735 },
7736 {
7737 "puzzle": "5 6 7 13",
7738 "solutions": [
7739 "6*5+7-13",
7740 "(13+7)*6\/5",
7741 "7*6-13-5",
7742 "(13-7)*5-6"
7743 ],
7744 "complexity": 2
7745 },
7746 {
7747 "puzzle": "7 9 9 13",
7748 "solutions": [
7749 "13+9+9-7"
7750 ],
7751 "complexity": 1
7752 },
7753 {
7754 "puzzle": "5 8 11 12",
7755 "solutions": [
7756 "(8+5-11)*12",
7757 "(11+5)*12\/8",
7758 "(11-5)*(12-8)"
7759 ],
7760 "complexity": 2
7761 },
7762 {
7763 "puzzle": "5 6 8 10",
7764 "solutions": [
7765 "8*6*5\/10",
7766 "8*5-10-6",
7767 "(8-5)*10-6"
7768 ],
7769 "complexity": 2
7770 },
7771 {
7772 "puzzle": "6 6 7 12",
7773 "solutions": [
7774 "7*6-12-6",
7775 "(12-7)*6-6"
7776 ],
7777 "complexity": 2
7778 },
7779 {
7780 "puzzle": "2 2 8 8",
7781 "solutions": [
7782 "(2+2)*8-8",
7783 "8*2*2-8",
7784 "(8-2)*8\/2",
7785 "(8\/2+8)*2"
7786 ],
7787 "complexity": 2
7788 },
7789 {
7790 "puzzle": "6 11 12 13",
7791 "solutions": [
7792 "(13-11)*6+12"
7793 ],
7794 "complexity": 2
7795 },
7796 {
7797 "puzzle": "2 6 8 12",
7798 "solutions": [
7799 "12+8+6-2",
7800 "12*8\/(6-2)",
7801 "(8*2-12)*6",
7802 "(8-2)*6-12",
7803 "(12-6)*8\/2",
7804 "(6-8\/2)*12",
7805 "8*6-12*2"
7806 ],
7807 "complexity": 1
7808 },
7809 {
7810 "puzzle": "6 9 9 11",
7811 "solutions": [
7812 "(9-6)*11-9",
7813 "(11-9)*9+6"
7814 ],
7815 "complexity": 2
7816 },
7817 {
7818 "puzzle": "1 2 7 11",
7819 "solutions": [
7820 "7*2+11-1"
7821 ],
7822 "complexity": 2
7823 },
7824 {
7825 "puzzle": "4 5 6 8",
7826 "solutions": [
7827 "(5+4-6)*8"
7828 ],
7829 "complexity": 2
7830 },
7831 {
7832 "puzzle": "4 5 10 12",
7833 "solutions": [
7834 "12*5*4\/10",
7835 "(4-10\/5)*12"
7836 ],
7837 "complexity": 3
7838 },
7839 {
7840 "puzzle": "2 7 12 13",
7841 "solutions": [
7842 "(13-7)*2+12"
7843 ],
7844 "complexity": 2
7845 },
7846 {
7847 "puzzle": "6 10 12 13",
7848 "solutions": [
7849 "12*6\/(13-10)"
7850 ],
7851 "complexity": 3
7852 },
7853 {
7854 "puzzle": "1 3 9 9",
7855 "solutions": [
7856 "(9-1)*9\/3"
7857 ],
7858 "complexity": 3
7859 },
7860 {
7861 "puzzle": "1 4 4 11",
7862 "solutions": [
7863 "(11-4-1)*4"
7864 ],
7865 "complexity": 2
7866 },
7867 {
7868 "puzzle": "2 3 9 10",
7869 "solutions": [
7870 "10+9+3+2",
7871 "10*3\/2+9",
7872 "(9*2-10)*3",
7873 "(10-2)*9\/3"
7874 ],
7875 "complexity": 1
7876 },
7877 {
7878 "puzzle": "1 2 3 13",
7879 "solutions": [
7880 "13*2+1-3",
7881 "(3-1)*13-2"
7882 ],
7883 "complexity": 2
7884 },
7885 {
7886 "puzzle": "3 4 6 8",
7887 "solutions": [
7888 "(8-6)*4*3",
7889 "(4*3-8)*6",
7890 "(8+4)*6\/3",
7891 "(8-6\/3)*4",
7892 "(8\/4+6)*3"
7893 ],
7894 "complexity": 2
7895 },
7896 {
7897 "puzzle": "1 2 2 9",
7898 "solutions": [
7899 "(9+2+1)*2"
7900 ],
7901 "complexity": 2
7902 },
7903 {
7904 "puzzle": "1 7 9 11",
7905 "solutions": [
7906 "(11+1)*(9-7)"
7907 ],
7908 "complexity": 2
7909 },
7910 {
7911 "puzzle": "2 3 6 6",
7912 "solutions": [
7913 "(3+2)*6-6",
7914 "6*6*2\/3",
7915 "(6+2)*(6-3)",
7916 "(6+3)*2+6",
7917 "(6*3-6)*2",
7918 "(6\/3+2)*6"
7919 ],
7920 "complexity": 2
7921 },
7922 {
7923 "puzzle": "1 3 6 11",
7924 "solutions": [
7925 "(11+1)*6\/3",
7926 "(11-1)*3-6"
7927 ],
7928 "complexity": 2
7929 },
7930 {
7931 "puzzle": "6 7 10 12",
7932 "solutions": [
7933 "12*7\/6+10",
7934 "12*7-10*6",
7935 "12*6\/(10-7)"
7936 ],
7937 "complexity": 2
7938 },
7939 {
7940 "puzzle": "2 2 5 12",
7941 "solutions": [
7942 "5*2+12+2"
7943 ],
7944 "complexity": 2
7945 },
7946 {
7947 "puzzle": "5 10 12 13",
7948 "solutions": [
7949 "(10+5-13)*12"
7950 ],
7951 "complexity": 2
7952 },
7953 {
7954 "puzzle": "1 3 8 13",
7955 "solutions": [
7956 "(13+8+3)*1"
7957 ],
7958 "complexity": 2
7959 },
7960 {
7961 "puzzle": "1 7 10 13",
7962 "solutions": [
7963 "(7+1)*(13-10)"
7964 ],
7965 "complexity": 2
7966 },
7967 {
7968 "puzzle": "1 6 6 6",
7969 "solutions": [
7970 "(6-1)*6-6"
7971 ],
7972 "complexity": 2
7973 },
7974 {
7975 "puzzle": "7 8 8 12",
7976 "solutions": [
7977 "(8+7-12)*8"
7978 ],
7979 "complexity": 2
7980 },
7981 {
7982 "puzzle": "2 5 7 7",
7983 "solutions": [
7984 "5*2+7+7"
7985 ],
7986 "complexity": 2
7987 },
7988 {
7989 "puzzle": "2 3 6 13",
7990 "solutions": [
7991 "13+6+3+2",
7992 "13*2-6\/3",
7993 "13*6\/3-2"
7994 ],
7995 "complexity": 1
7996 },
7997 {
7998 "puzzle": "2 6 8 13",
7999 "solutions": [
8000 "6\/2+13+8",
8001 "13*2+6-8",
8002 "(8-6)*13-2"
8003 ],
8004 "complexity": 2
8005 },
8006 {
8007 "puzzle": "3 9 10 13",
8008 "solutions": [
8009 "9*3+10-13",
8010 "(13-10)*9-3"
8011 ],
8012 "complexity": 2
8013 },
8014 {
8015 "puzzle": "1 9 10 13",
8016 "solutions": [
8017 "(9-1)*(13-10)"
8018 ],
8019 "complexity": 2
8020 },
8021 {
8022 "puzzle": "2 3 4 7",
8023 "solutions": [
8024 "(7+2-3)*4",
8025 "(4+2)*(7-3)",
8026 "(7+3)*2+4"
8027 ],
8028 "complexity": 2
8029 },
8030 {
8031 "puzzle": "4 4 8 12",
8032 "solutions": [
8033 "12*4*4\/8",
8034 "8*4+4-12",
8035 "(4-8\/4)*12",
8036 "(12-4)*4-8"
8037 ],
8038 "complexity": 2
8039 },
8040 {
8041 "puzzle": "3 3 4 11",
8042 "solutions": [
8043 "3*3+11+4",
8044 "(11-4)*3+3"
8045 ],
8046 "complexity": 2
8047 },
8048 {
8049 "puzzle": "1 2 6 10",
8050 "solutions": [
8051 "(2+1)*10-6",
8052 "(6+1)*2+10",
8053 "(10-1)*2+6",
8054 "(10\/2-1)*6"
8055 ],
8056 "complexity": 2
8057 },
8058 {
8059 "puzzle": "5 6 6 8",
8060 "solutions": [
8061 "(8-5)*6+6"
8062 ],
8063 "complexity": 2
8064 },
8065 {
8066 "puzzle": "3 3 9 12",
8067 "solutions": [
8068 "12*3-9-3",
8069 "(9+3)*3-12",
8070 "(9-3)*12\/3"
8071 ],
8072 "complexity": 2
8073 },
8074 {
8075 "puzzle": "7 7 8 11",
8076 "solutions": [
8077 "(7+7-11)*8"
8078 ],
8079 "complexity": 2
8080 },
8081 {
8082 "puzzle": "1 3 7 10",
8083 "solutions": [
8084 "(3-1)*7+10",
8085 "10*3+1-7"
8086 ],
8087 "complexity": 2
8088 },
8089 {
8090 "puzzle": "2 3 4 9",
8091 "solutions": [
8092 "9*4*2\/3",
8093 "(9+3)*(4-2)",
8094 "(9+3)*4\/2"
8095 ],
8096 "complexity": 2
8097 },
8098 {
8099 "puzzle": "2 3 10 12",
8100 "solutions": [
8101 "12*10\/(3+2)",
8102 "12*3-10-2",
8103 "(10+2)*3-12",
8104 "10*2+12\/3",
8105 "(10*2-12)*3",
8106 "(10\/2-3)*12",
8107 "10*3-12\/2"
8108 ],
8109 "complexity": 2
8110 },
8111 {
8112 "puzzle": "5 9 12 12",
8113 "solutions": [
8114 "(9+5-12)*12",
8115 "(12*9+12)\/5"
8116 ],
8117 "complexity": 2
8118 },
8119 {
8120 "puzzle": "3 4 6 6",
8121 "solutions": [
8122 "4*3+6+6",
8123 "6*6-4*3",
8124 "(6+4)*3-6",
8125 "(6+6-4)*3"
8126 ],
8127 "complexity": 2
8128 },
8129 {
8130 "puzzle": "3 5 7 10",
8131 "solutions": [
8132 "(5+3)*(10-7)",
8133 "(5-3)*7+10",
8134 "(10+5-7)*3"
8135 ],
8136 "complexity": 2
8137 },
8138 {
8139 "puzzle": "5 8 8 8",
8140 "solutions": [
8141 "8*5-8-8",
8142 "8*8-8*5"
8143 ],
8144 "complexity": 2
8145 },
8146 {
8147 "puzzle": "6 8 8 12",
8148 "solutions": [
8149 "12*8\/6+8",
8150 "(8+8-12)*6"
8151 ],
8152 "complexity": 2
8153 },
8154 {
8155 "puzzle": "2 4 5 6",
8156 "solutions": [
8157 "6*5-4-2",
8158 "(4+2)*5-6",
8159 "5*4+6-2",
8160 "(6-2)*5+4",
8161 "(5+4)*2+6"
8162 ],
8163 "complexity": 2
8164 },
8165 {
8166 "puzzle": "1 5 12 12",
8167 "solutions": [
8168 "12*12\/(5+1)"
8169 ],
8170 "complexity": 3
8171 },
8172 {
8173 "puzzle": "2 6 7 11",
8174 "solutions": [
8175 "(11+7-6)*2"
8176 ],
8177 "complexity": 2
8178 },
8179 {
8180 "puzzle": "5 5 8 13",
8181 "solutions": [
8182 "(13-5-5)*8",
8183 "(13-5)*(8-5)"
8184 ],
8185 "complexity": 2
8186 },
8187 {
8188 "puzzle": "2 4 6 11",
8189 "solutions": [
8190 "11*2+6-4",
8191 "(6-4)*11+2",
8192 "(11+4)*2-6"
8193 ],
8194 "complexity": 2
8195 },
8196 {
8197 "puzzle": "4 10 12 13",
8198 "solutions": [
8199 "(12-4)*(13-10)",
8200 "(13-10)*4+12"
8201 ],
8202 "complexity": 2
8203 },
8204 {
8205 "puzzle": "2 3 3 10",
8206 "solutions": [
8207 "10*3-3*2",
8208 "(10\/2+3)*3"
8209 ],
8210 "complexity": 2
8211 },
8212 {
8213 "puzzle": "1 5 6 7",
8214 "solutions": [
8215 "6*5+1-7",
8216 "(7-1)*5-6"
8217 ],
8218 "complexity": 2
8219 },
8220 {
8221 "puzzle": "3 4 8 12",
8222 "solutions": [
8223 "12*4\/3+8",
8224 "12*4-8*3",
8225 "12*3-8-4",
8226 "(8+4)*3-12",
8227 "(12+4-8)*3",
8228 "(8-4)*3+12"
8229 ],
8230 "complexity": 2
8231 },
8232 {
8233 "puzzle": "4 9 10 13",
8234 "solutions": [
8235 "(10-4)*(13-9)",
8236 "(10+9-13)*4"
8237 ],
8238 "complexity": 2
8239 },
8240 {
8241 "puzzle": "5 8 10 11",
8242 "solutions": [
8243 "11+10+8-5"
8244 ],
8245 "complexity": 1
8246 },
8247 {
8248 "puzzle": "2 2 8 9",
8249 "solutions": [
8250 "9*2+8-2"
8251 ],
8252 "complexity": 2
8253 },
8254 {
8255 "puzzle": "2 4 9 12",
8256 "solutions": [
8257 "(12-9)*4*2",
8258 "(9*2-12)*4",
8259 "(9*4+12)\/2",
8260 "(12\/4+9)*2"
8261 ],
8262 "complexity": 2
8263 },
8264 {
8265 "puzzle": "2 4 6 8",
8266 "solutions": [
8267 "8*6\/(4-2)",
8268 "8*6*2\/4",
8269 "8*4-6-2",
8270 "(6+2)*4-8",
8271 "6*2+8+4",
8272 "(6-2)*4+8",
8273 "(8\/4+2)*6",
8274 "(8+6)*2-4"
8275 ],
8276 "complexity": 2
8277 },
8278 {
8279 "puzzle": "3 3 6 12",
8280 "solutions": [
8281 "12+6+3+3",
8282 "(3+3)*6-12"
8283 ],
8284 "complexity": 1
8285 },
8286 {
8287 "puzzle": "2 4 4 6",
8288 "solutions": [
8289 "(4*2-4)*6",
8290 "4*4+6+2",
8291 "(4+4)*6\/2",
8292 "(6+4)*2+4"
8293 ],
8294 "complexity": 2
8295 },
8296 {
8297 "puzzle": "4 4 5 11",
8298 "solutions": [
8299 "11+5+4+4",
8300 "11*4-5*4"
8301 ],
8302 "complexity": 1
8303 },
8304 {
8305 "puzzle": "2 3 4 5",
8306 "solutions": [
8307 "(5+3-2)*4",
8308 "(5+4+3)*2"
8309 ],
8310 "complexity": 2
8311 },
8312 {
8313 "puzzle": "3 3 5 12",
8314 "solutions": [
8315 "5*3+12-3",
8316 "(12-5)*3+3"
8317 ],
8318 "complexity": 2
8319 },
8320 {
8321 "puzzle": "3 4 6 9",
8322 "solutions": [
8323 "(9+3-6)*4",
8324 "(9+3)*(6-4)"
8325 ],
8326 "complexity": 2
8327 },
8328 {
8329 "puzzle": "4 8 11 13",
8330 "solutions": [
8331 "(8+4)*(13-11)",
8332 "(11+8-13)*4"
8333 ],
8334 "complexity": 2
8335 },
8336 {
8337 "puzzle": "8 9 9 12",
8338 "solutions": [
8339 "9*8\/(12-9)"
8340 ],
8341 "complexity": 3
8342 },
8343 {
8344 "puzzle": "1 3 4 8",
8345 "solutions": [
8346 "(3+1)*4+8",
8347 "(8+1-3)*4",
8348 "(8+4)*(3-1)"
8349 ],
8350 "complexity": 2
8351 },
8352 {
8353 "puzzle": "1 4 7 7",
8354 "solutions": [
8355 "(7+1)*(7-4)"
8356 ],
8357 "complexity": 2
8358 },
8359 {
8360 "puzzle": "6 7 9 9",
8361 "solutions": [
8362 "7*6-9-9",
8363 "(9+7)*9\/6",
8364 "(9-7)*9+6"
8365 ],
8366 "complexity": 2
8367 },
8368 {
8369 "puzzle": "2 3 5 7",
8370 "solutions": [
8371 "7*3+5-2",
8372 "(5-2)*7+3",
8373 "5*3+7+2"
8374 ],
8375 "complexity": 2
8376 },
8377 {
8378 "puzzle": "3 6 7 13",
8379 "solutions": [
8380 "6*3+13-7",
8381 "(13-7)*3+6"
8382 ],
8383 "complexity": 2
8384 },
8385 {
8386 "puzzle": "1 6 7 9",
8387 "solutions": [
8388 "(7+1)*(9-6)"
8389 ],
8390 "complexity": 2
8391 },
8392 {
8393 "puzzle": "3 3 5 13",
8394 "solutions": [
8395 "13+5+3+3",
8396 "13*3-5*3"
8397 ],
8398 "complexity": 1
8399 },
8400 {
8401 "puzzle": "3 7 8 11",
8402 "solutions": [
8403 "7*3+11-8",
8404 "(8-3)*7-11",
8405 "(11-8)*7+3"
8406 ],
8407 "complexity": 2
8408 },
8409 {
8410 "puzzle": "4 6 7 12",
8411 "solutions": [
8412 "12*6\/(7-4)",
8413 "(7-12\/4)*6"
8414 ],
8415 "complexity": 3
8416 },
8417 {
8418 "puzzle": "3 7 9 12",
8419 "solutions": [
8420 "7*3+12-9",
8421 "(7-3)*9-12",
8422 "(12-7)*3+9",
8423 "(12-9)*7+3"
8424 ],
8425 "complexity": 2
8426 },
8427 {
8428 "puzzle": "1 5 7 9",
8429 "solutions": [
8430 "(7-1)*(9-5)"
8431 ],
8432 "complexity": 2
8433 },
8434 {
8435 "puzzle": "6 8 9 12",
8436 "solutions": [
8437 "9*8\/6+12",
8438 "(9+6-12)*8"
8439 ],
8440 "complexity": 2
8441 },
8442 {
8443 "puzzle": "1 3 7 7",
8444 "solutions": [
8445 "(7-1)*(7-3)"
8446 ],
8447 "complexity": 2
8448 },
8449 {
8450 "puzzle": "1 3 7 12",
8451 "solutions": [
8452 "(7-1)*12\/3"
8453 ],
8454 "complexity": 3
8455 },
8456 {
8457 "puzzle": "4 8 9 13",
8458 "solutions": [
8459 "8\/4+13+9",
8460 "(13-9)*4+8"
8461 ],
8462 "complexity": 2
8463 },
8464 {
8465 "puzzle": "2 6 10 13",
8466 "solutions": [
8467 "(6+2)*(13-10)",
8468 "10\/2+13+6",
8469 "(13-6)*2+10"
8470 ],
8471 "complexity": 2
8472 },
8473 {
8474 "puzzle": "3 7 9 11",
8475 "solutions": [
8476 "11+9+7-3",
8477 "(9-3)*(11-7)"
8478 ],
8479 "complexity": 1
8480 },
8481 {
8482 "puzzle": "3 5 7 9",
8483 "solutions": [
8484 "9+7+5+3",
8485 "9*5-7*3",
8486 "(9+3)*(7-5)"
8487 ],
8488 "complexity": 1
8489 },
8490 {
8491 "puzzle": "4 6 8 13",
8492 "solutions": [
8493 "(13-6-4)*8"
8494 ],
8495 "complexity": 2
8496 },
8497 {
8498 "puzzle": "2 7 9 11",
8499 "solutions": [
8500 "11*2+9-7",
8501 "(9-7)*11+2"
8502 ],
8503 "complexity": 2
8504 },
8505 {
8506 "puzzle": "1 4 8 9",
8507 "solutions": [
8508 "9*8\/(4-1)",
8509 "8*4+1-9",
8510 "(9-1)*4-8"
8511 ],
8512 "complexity": 2
8513 },
8514 {
8515 "puzzle": "3 5 10 13",
8516 "solutions": [
8517 "(5+3)*(13-10)",
8518 "13*3-10-5",
8519 "(13+5-10)*3"
8520 ],
8521 "complexity": 2
8522 },
8523 {
8524 "puzzle": "2 5 8 10",
8525 "solutions": [
8526 "(10-5-2)*8",
8527 "(10-2)*(8-5)"
8528 ],
8529 "complexity": 2
8530 },
8531 {
8532 "puzzle": "2 3 7 13",
8533 "solutions": [
8534 "7*2+13-3",
8535 "(13+2-7)*3"
8536 ],
8537 "complexity": 2
8538 },
8539 {
8540 "puzzle": "4 8 8 10",
8541 "solutions": [
8542 "(8+4)*(10-8)",
8543 "10*4-8-8",
8544 "8*8-10*4",
8545 "(8+8-10)*4"
8546 ],
8547 "complexity": 2
8548 },
8549 {
8550 "puzzle": "5 8 10 12",
8551 "solutions": [
8552 "(10+5-12)*8"
8553 ],
8554 "complexity": 2
8555 },
8556 {
8557 "puzzle": "4 5 5 10",
8558 "solutions": [
8559 "10+5+5+4"
8560 ],
8561 "complexity": 1
8562 },
8563 {
8564 "puzzle": "2 9 11 13",
8565 "solutions": [
8566 "13*2+9-11",
8567 "(11-9)*13-2"
8568 ],
8569 "complexity": 2
8570 },
8571 {
8572 "puzzle": "1 3 3 6",
8573 "solutions": [
8574 "(6+3-1)*3",
8575 "(6+1)*3+3"
8576 ],
8577 "complexity": 2
8578 },
8579 {
8580 "puzzle": "3 5 6 10",
8581 "solutions": [
8582 "10+6+5+3",
8583 "(10\/5+6)*3"
8584 ],
8585 "complexity": 1
8586 },
8587 {
8588 "puzzle": "2 5 7 13",
8589 "solutions": [
8590 "13*2+5-7",
8591 "7*5+2-13",
8592 "(7*5+13)\/2",
8593 "(7-5)*13-2"
8594 ],
8595 "complexity": 2
8596 },
8597 {
8598 "puzzle": "2 3 5 13",
8599 "solutions": [
8600 "3*2+13+5",
8601 "13*2+3-5",
8602 "(5-3)*13-2"
8603 ],
8604 "complexity": 2
8605 },
8606 {
8607 "puzzle": "2 5 5 7",
8608 "solutions": [
8609 "7*2+5+5"
8610 ],
8611 "complexity": 2
8612 },
8613 {
8614 "puzzle": "4 6 6 12",
8615 "solutions": [
8616 "(6-4)*6+12",
8617 "12*6\/4+6"
8618 ],
8619 "complexity": 2
8620 },
8621 {
8622 "puzzle": "3 4 8 9",
8623 "solutions": [
8624 "9+8+4+3",
8625 "(4*3-9)*8",
8626 "(9+3)*8\/4",
8627 "(9-3)*(8-4)"
8628 ],
8629 "complexity": 1
8630 },
8631 {
8632 "puzzle": "1 5 8 11",
8633 "solutions": [
8634 "(8-1)*5-11",
8635 "(11+8+5)*1"
8636 ],
8637 "complexity": 2
8638 },
8639 {
8640 "puzzle": "2 5 7 11",
8641 "solutions": [
8642 "11*2+7-5",
8643 "(7-5)*11+2",
8644 "(11*5-7)\/2"
8645 ],
8646 "complexity": 2
8647 },
8648 {
8649 "puzzle": "2 4 4 5",
8650 "solutions": [
8651 "(5+2)*4-4",
8652 "(5*2-4)*4",
8653 "(4+4)*(5-2)"
8654 ],
8655 "complexity": 2
8656 },
8657 {
8658 "puzzle": "2 3 6 12",
8659 "solutions": [
8660 "3*2+12+6",
8661 "6*3*2-12",
8662 "12*3\/2+6",
8663 "12*3-6*2",
8664 "(12+2-6)*3",
8665 "(6-2)*3+12",
8666 "(12-2)*3-6",
8667 "6*3+12\/2",
8668 "(12+3)*2-6",
8669 "(12-3)*2+6"
8670 ],
8671 "complexity": 2
8672 },
8673 {
8674 "puzzle": "2 4 4 10",
8675 "solutions": [
8676 "(4-2)*10+4",
8677 "10*4\/2+4",
8678 "4*4+10-2",
8679 "(10+4)*2-4"
8680 ],
8681 "complexity": 2
8682 },
8683 {
8684 "puzzle": "6 9 9 12",
8685 "solutions": [
8686 "12+9+9-6"
8687 ],
8688 "complexity": 1
8689 },
8690 {
8691 "puzzle": "3 3 3 4",
8692 "solutions": [
8693 "(3*3-3)*4",
8694 "(4+3)*3+3"
8695 ],
8696 "complexity": 2
8697 },
8698 {
8699 "puzzle": "1 4 5 7",
8700 "solutions": [
8701 "7*4+1-5",
8702 "(5-1)*7-4"
8703 ],
8704 "complexity": 2
8705 },
8706 {
8707 "puzzle": "4 4 6 10",
8708 "solutions": [
8709 "10+6+4+4",
8710 "(6-4)*10+4"
8711 ],
8712 "complexity": 1
8713 },
8714 {
8715 "puzzle": "3 4 9 9",
8716 "solutions": [
8717 "(9+9)*4\/3",
8718 "9*4-9-3",
8719 "(9-9\/3)*4",
8720 "(9-4)*3+9"
8721 ],
8722 "complexity": 2
8723 },
8724 {
8725 "puzzle": "4 4 7 8",
8726 "solutions": [
8727 "7*4+4-8",
8728 "(8-4)*7-4"
8729 ],
8730 "complexity": 2
8731 },
8732 {
8733 "puzzle": "4 6 9 13",
8734 "solutions": [
8735 "13+9+6-4"
8736 ],
8737 "complexity": 1
8738 },
8739 {
8740 "puzzle": "3 5 6 11",
8741 "solutions": [
8742 "(5*3-11)*6",
8743 "6*3+11-5",
8744 "(11-5)*3+6"
8745 ],
8746 "complexity": 2
8747 },
8748 {
8749 "puzzle": "1 4 7 9",
8750 "solutions": [
8751 "(9-1)*(7-4)"
8752 ],
8753 "complexity": 2
8754 },
8755 {
8756 "puzzle": "2 4 8 13",
8757 "solutions": [
8758 "13*2-8\/4",
8759 "13*8\/4-2"
8760 ],
8761 "complexity": 3
8762 },
8763 {
8764 "puzzle": "4 8 12 12",
8765 "solutions": [
8766 "(12+4)*12\/8",
8767 "(4-12\/12)*8"
8768 ],
8769 "complexity": 3
8770 },
8771 {
8772 "puzzle": "3 3 5 10",
8773 "solutions": [
8774 "3*3+10+5",
8775 "(10+3-5)*3"
8776 ],
8777 "complexity": 2
8778 },
8779 {
8780 "puzzle": "4 4 6 8",
8781 "solutions": [
8782 "(8+4-6)*4",
8783 "(8+4)*(6-4)"
8784 ],
8785 "complexity": 2
8786 },
8787 {
8788 "puzzle": "2 5 10 13",
8789 "solutions": [
8790 "10*5-13*2",
8791 "13*2-10\/5",
8792 "13*10\/5-2"
8793 ],
8794 "complexity": 2
8795 },
8796 {
8797 "puzzle": "2 3 3 3",
8798 "solutions": [
8799 "(3+3+2)*3",
8800 "(3*3+3)*2"
8801 ],
8802 "complexity": 2
8803 },
8804 {
8805 "puzzle": "1 4 5 9",
8806 "solutions": [
8807 "(4-1)*5+9",
8808 "(9-4)*5-1"
8809 ],
8810 "complexity": 2
8811 },
8812 {
8813 "puzzle": "1 4 6 6",
8814 "solutions": [
8815 "(4+1)*6-6",
8816 "(4-1)*6+6"
8817 ],
8818 "complexity": 2
8819 },
8820 {
8821 "puzzle": "2 3 8 8",
8822 "solutions": [
8823 "(8-3-2)*8",
8824 "(8+8)*3\/2",
8825 "(8*2-8)*3"
8826 ],
8827 "complexity": 2
8828 },
8829 {
8830 "puzzle": "1 5 6 11",
8831 "solutions": [
8832 "(6+1)*5-11",
8833 "(11-6)*5-1"
8834 ],
8835 "complexity": 2
8836 },
8837 {
8838 "puzzle": "2 3 5 10",
8839 "solutions": [
8840 "(10+2)*(5-3)",
8841 "(10+5-3)*2"
8842 ],
8843 "complexity": 2
8844 },
8845 {
8846 "puzzle": "1 4 5 8",
8847 "solutions": [
8848 "(5+1)*(8-4)",
8849 "(5-1)*4+8"
8850 ],
8851 "complexity": 2
8852 },
8853 {
8854 "puzzle": "1 1 6 9",
8855 "solutions": [
8856 "(1+1)*9+6"
8857 ],
8858 "complexity": 2
8859 },
8860 {
8861 "puzzle": "3 5 7 8",
8862 "solutions": [
8863 "7*3+8-5",
8864 "7*5-8-3",
8865 "(8-5)*7+3"
8866 ],
8867 "complexity": 2
8868 },
8869 {
8870 "puzzle": "2 8 10 13",
8871 "solutions": [
8872 "13*2+8-10",
8873 "(10-8)*13-2"
8874 ],
8875 "complexity": 2
8876 },
8877 {
8878 "puzzle": "1 3 6 10",
8879 "solutions": [
8880 "(10*3-6)*1"
8881 ],
8882 "complexity": 2
8883 },
8884 {
8885 "puzzle": "2 10 12 13",
8886 "solutions": [
8887 "13*2+10-12",
8888 "(12+10)\/2+13",
8889 "(12-10)*13-2"
8890 ],
8891 "complexity": 2
8892 },
8893 {
8894 "puzzle": "2 3 7 8",
8895 "solutions": [
8896 "(7+2)*8\/3",
8897 "(8-2)*(7-3)",
8898 "(8+7-3)*2"
8899 ],
8900 "complexity": 2
8901 },
8902 {
8903 "puzzle": "2 3 8 9",
8904 "solutions": [
8905 "(9-3*2)*8",
8906 "(9-3)*8\/2"
8907 ],
8908 "complexity": 2
8909 },
8910 {
8911 "puzzle": "2 4 7 9",
8912 "solutions": [
8913 "4*2+9+7",
8914 "(9+7-4)*2"
8915 ],
8916 "complexity": 2
8917 },
8918 {
8919 "puzzle": "1 3 7 9",
8920 "solutions": [
8921 "(7+1)*9\/3"
8922 ],
8923 "complexity": 3
8924 },
8925 {
8926 "puzzle": "3 3 8 10",
8927 "solutions": [
8928 "10+8+3+3"
8929 ],
8930 "complexity": 1
8931 },
8932 {
8933 "puzzle": "1 3 5 6",
8934 "solutions": [
8935 "6*3+5+1",
8936 "(5+1)*3+6"
8937 ],
8938 "complexity": 2
8939 },
8940 {
8941 "puzzle": "2 6 9 12",
8942 "solutions": [
8943 "(6+2)*(12-9)",
8944 "(6-2)*9-12",
8945 "6\/2+12+9",
8946 "9*2+12-6"
8947 ],
8948 "complexity": 2
8949 },
8950 {
8951 "puzzle": "3 4 7 12",
8952 "solutions": [
8953 "7*3+12\/4",
8954 "12*7\/3-4",
8955 "7*4-12\/3",
8956 "12*7\/4+3"
8957 ],
8958 "complexity": 3
8959 },
8960 {
8961 "puzzle": "5 6 6 12",
8962 "solutions": [
8963 "6*5+6-12",
8964 "12*5-6*6",
8965 "(12-6)*5-6"
8966 ],
8967 "complexity": 2
8968 },
8969 {
8970 "puzzle": "3 6 8 13",
8971 "solutions": [
8972 "13+8+6-3"
8973 ],
8974 "complexity": 1
8975 },
8976 {
8977 "puzzle": "3 6 8 12",
8978 "solutions": [
8979 "(12-6-3)*8",
8980 "(8-12\/3)*6"
8981 ],
8982 "complexity": 2
8983 },
8984 {
8985 "puzzle": "2 3 8 10",
8986 "solutions": [
8987 "3*2+10+8",
8988 "10*3+2-8"
8989 ],
8990 "complexity": 2
8991 },
8992 {
8993 "puzzle": "2 3 6 7",
8994 "solutions": [
8995 "7*6\/2+3",
8996 "7*3+6\/2",
8997 "(7*2-6)*3"
8998 ],
8999 "complexity": 2
9000 }
9001 ]