1
4
7
2
3
5
9
8
8
3
5
6
2
1
5
4
7
2
9
4
7
8
5
1
6

这个数独谜题有 77 个步骤，它使用 Locked Candidates Type 1 (Pointing), Hidden Pair, AIC, Hidden Single, undefined, Locked Candidates Type 2 (Claiming), Discontinuous Nice Loop, Naked Triple, Naked Single, Naked Pair, Finned Swordfish, Swordfish, Full House 技术解决。

Naked Single 解释
Hidden Single 解释
Hidden Pair 解释
Locked Candidates 解释
Locked Candidates 解释
Full House 解释
尝试解决

解决步骤：

  1. Locked Candidates Type 1 (Pointing): 3 in b1 => r79c2<>3
  2. Hidden Pair: 1,7 in r4c3,r5c2 => r4c3<>4, r4c3<>9, r5c2<>6
  3. Hidden Pair: 7,9 in r7c8,r9c9 => r7c8,r9c9<>3, r7c8<>8, r9c9<>2, r9c9<>4
  4. Hidden Pair: 1,7 in r49c3 => r9c3<>4, r9c3<>5
  5. AIC: 1 1- r3c5 =1= r9c5 =2= r9c7 =4= r3c7 -4- r3c4 =4= r4c4 =7= r4c3 =1= r9c3 -1- r7c2 =1= r7c6 -1 => r2c6,r9c5<>1
  6. 排 3 / 柱子 5 → 1 (Hidden Single)
  7. XY-Chain: 3 3- r3c8 -2- r2c7 -6- r5c7 -8- r7c7 -3 => r3c7,r8c8<>3
  8. Locked Candidates Type 2 (Claiming): 3 in c7 => r8c9<>3
  9. Discontinuous Nice Loop: 9 r2c1 -9- r5c1 -6- r6c2 -2- r3c2 =2= r2c1 => r2c1<>9
  10. Locked Candidates Type 1 (Pointing): 9 in b1 => r6c3<>9
  11. Discontinuous Nice Loop: 3 r4c4 -3- r8c4 =3= r8c1 -3- r9c1 -4- r9c7 =4= r3c7 -4- r3c4 =4= r4c4 => r4c4<>3
  12. Locked Candidates Type 1 (Pointing): 3 in b5 => r79c6<>3
  13. Naked Triple: 1,7,9 in r9c369 => r9c2<>1, r9c2<>7, r9c5<>9
  14. 排 9 / 柱子 2 → 5 (Naked Single)
  15. 排 9 / 柱子 5 → 2 (Naked Single)
  16. 排 8 / 柱子 5 → 5 (Naked Single)
  17. 排 5 / 柱子 4 → 5 (Hidden Single)
  18. Locked Candidates Type 2 (Claiming): 9 in c5 => r4c46,r6c6<>9
  19. Locked Candidates Type 2 (Claiming): 2 in c7 => r2c89,r3c8<>2
  20. 排 3 / 柱子 8 → 3 (Naked Single)
  21. 排 1 / 柱子 2 → 3 (Hidden Single)
  22. Naked Pair: 2,6 in r36c2 => r7c2<>6
  23. Finned Swordfish: 7 r157 c258 fr1c9 => r2c8<>7
  24. Swordfish: 7 r249 c349 => r1c9<>7
  25. Naked Triple: 2,4,6 in r1c9,r23c7 => r2c9<>6
  26. W-Wing: 1/7 in r2c9,r4c3 connected by 7 in r9c39 => r4c9<>1
  27. XY-Chain: 9 9- r6c5 -8- r1c5 -7- r1c8 -5- r2c8 -1- r2c9 -7- r9c9 -9 => r6c9<>9
  28. Discontinuous Nice Loop: 6/8/9 r2c3 =5= r2c8 =1= r2c9 =7= r2c4 -7- r4c4 -4- r3c4 =4= r3c7 -4- r9c7 -3- r7c7 -8- r5c7 =8= r5c5 =7= r1c5 -7- r1c8 -5- r1c3 =5= r2c3 => r2c3<>6, r2c3<>8, r2c3<>9
  29. 排 2 / 柱子 3 → 5 (Naked Single)
  30. 排 2 / 柱子 8 → 1 (Naked Single)
  31. 排 2 / 柱子 9 → 7 (Naked Single)
  32. 排 1 / 柱子 8 → 5 (Naked Single)
  33. 排 9 / 柱子 9 → 9 (Naked Single)
  34. 排 7 / 柱子 8 → 7 (Naked Single)
  35. 排 9 / 柱子 6 → 1 (Naked Single)
  36. 排 7 / 柱子 2 → 1 (Naked Single)
  37. 排 9 / 柱子 3 → 7 (Naked Single)
  38. 排 5 / 柱子 2 → 7 (Naked Single)
  39. 排 4 / 柱子 3 → 1 (Naked Single)
  40. 排 3 / 柱子 3 → 9 (Hidden Single)
  41. 排 5 / 柱子 9 → 1 (Hidden Single)
  42. 排 1 / 柱子 5 → 7 (Hidden Single)
  43. 排 4 / 柱子 4 → 7 (Hidden Single)
  44. 排 3 / 柱子 4 → 4 (Hidden Single)
  45. 排 1 / 柱子 9 → 4 (Hidden Single)
  46. 排 8 / 柱子 9 → 2 (Naked Single)
  47. 排 4 / 柱子 9 → 3 (Naked Single)
  48. 排 6 / 柱子 9 → 6 (Full House)
  49. 排 8 / 柱子 8 → 8 (Naked Single)
  50. 排 4 / 柱子 6 → 4 (Naked Single)
  51. 排 5 / 柱子 7 → 8 (Naked Single)
  52. 排 6 / 柱子 2 → 2 (Naked Single)
  53. 排 3 / 柱子 2 → 6 (Full House)
  54. 排 3 / 柱子 7 → 2 (Full House)
  55. 排 2 / 柱子 7 → 6 (Full House)
  56. 排 6 / 柱子 3 → 4 (Naked Single)
  57. 排 7 / 柱子 7 → 3 (Naked Single)
  58. 排 9 / 柱子 7 → 4 (Full House)
  59. 排 9 / 柱子 1 → 3 (Full House)
  60. 排 5 / 柱子 5 → 9 (Naked Single)
  61. 排 5 / 柱子 1 → 6 (Full House)
  62. 排 4 / 柱子 1 → 9 (Full House)
  63. 排 6 / 柱子 5 → 8 (Full House)
  64. 排 4 / 柱子 8 → 2 (Full House)
  65. 排 6 / 柱子 8 → 9 (Full House)
  66. 排 6 / 柱子 6 → 3 (Full House)
  67. 排 1 / 柱子 3 → 8 (Naked Single)
  68. 排 8 / 柱子 3 → 6 (Full House)
  69. 排 1 / 柱子 6 → 6 (Full House)
  70. 排 2 / 柱子 1 → 2 (Full House)
  71. 排 2 / 柱子 4 → 9 (Naked Single)
  72. 排 2 / 柱子 6 → 8 (Full House)
  73. 排 7 / 柱子 6 → 9 (Full House)
  74. 排 7 / 柱子 1 → 8 (Naked Single)
  75. 排 8 / 柱子 1 → 4 (Full House)
  76. 排 8 / 柱子 4 → 3 (Full House)
  77. 排 7 / 柱子 4 → 6 (Full House)
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