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

这个数独谜题有 51 个步骤，它使用 Hidden Single, Locked Candidates Type 1 (Pointing), Locked Pair, Naked Single, Full House, Naked Pair, Uniqueness Test 1, Uniqueness Test 2, Hidden Rectangle, AIC, Uniqueness Test 4, undefined, Give Up 技术解决。

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

解决步骤：

  1. 排 5 / 柱子 6 → 9 (Hidden Single)
  2. 排 4 / 柱子 3 → 6 (Hidden Single)
  3. 排 3 / 柱子 4 → 6 (Hidden Single)
  4. 排 3 / 柱子 2 → 7 (Hidden Single)
  5. 排 9 / 柱子 1 → 6 (Hidden Single)
  6. 排 1 / 柱子 7 → 1 (Hidden Single)
  7. 排 7 / 柱子 9 → 4 (Hidden Single)
  8. 排 5 / 柱子 1 → 5 (Hidden Single)
  9. 排 5 / 柱子 2 → 4 (Hidden Single)
  10. 排 9 / 柱子 3 → 4 (Hidden Single)
  11. 排 8 / 柱子 3 → 5 (Hidden Single)
  12. Locked Candidates Type 1 (Pointing): 1 in b1 => r7c3<>1
  13. Locked Candidates Type 1 (Pointing): 3 in b1 => r7c1<>3
  14. Locked Candidates Type 1 (Pointing): 9 in b1 => r7c3<>9
  15. Locked Pair: 2,8 in r7c13 => r7c247,r89c2<>2, r7c245,r89c2<>8
  16. 排 9 / 柱子 2 → 9 (Naked Single)
  17. Locked Candidates Type 1 (Pointing): 3 in b3 => r6c9<>3
  18. Locked Candidates Type 1 (Pointing): 5 in b3 => r6c9<>5
  19. Locked Candidates Type 1 (Pointing): 9 in b3 => r8c8<>9
  20. Locked Candidates Type 1 (Pointing): 7 in b9 => r5c7<>7
  21. 排 5 / 柱子 7 → 2 (Naked Single)
  22. 排 5 / 柱子 4 → 8 (Naked Single)
  23. 排 5 / 柱子 9 → 7 (Full House)
  24. 排 9 / 柱子 7 → 7 (Naked Single)
  25. 排 7 / 柱子 7 → 9 (Naked Single)
  26. 排 8 / 柱子 7 → 6 (Naked Single)
  27. 排 8 / 柱子 5 → 9 (Hidden Single)
  28. Locked Candidates Type 1 (Pointing): 2 in b9 => r8c6<>2
  29. Locked Candidates Type 1 (Pointing): 8 in b9 => r8c6<>8
  30. Naked Pair: 2,8 in r17c3 => r2c3<>8, r3c3<>2
  31. Uniqueness Test 1: 2/8 in r1c13,r7c13 => r1c1<>2, r1c1<>8
  32. Uniqueness Test 2: 3/5 in r4c57,r6c57 => r13c5,r6c6<>4
  33. Hidden Rectangle: 3/4 in r1c16,r3c16 => r3c6<>3
  34. AIC: 2 2- r1c3 -8- r2c1 =8= r2c6 =1= r2c3 =9= r2c8 -9- r3c8 -2 => r1c89,r3c1<>2
  35. 排 1 / 柱子 3 → 2 (Hidden Single)
  36. 排 7 / 柱子 3 → 8 (Naked Single)
  37. 排 7 / 柱子 1 → 2 (Naked Single)
  38. 排 2 / 柱子 1 → 8 (Hidden Single)
  39. Uniqueness Test 4: 3/4 in r1c16,r3c16 => r1c6<>3
  40. AIC: 4 4- r1c1 -3- r1c9 -6- r6c9 -8- r6c2 -2- r6c6 =2= r9c6 =8= r1c6 =4= r3c6 -4 => r1c6,r3c1<>4
  41. 排 1 / 柱子 6 → 8 (Naked Single)
  42. 排 3 / 柱子 1 → 3 (Naked Single)
  43. 排 1 / 柱子 1 → 4 (Full House)
  44. 排 3 / 柱子 6 → 4 (Hidden Single)
  45. 排 9 / 柱子 5 → 8 (Hidden Single)
  46. XYZ-Wing: 3/5/7 in r1c5,r2c49 => r2c6<>3
  47. Naked Pair: 1,5 in r2c6,r3c5 => r2c4<>5
  48. Naked Pair: 3,7 in r27c4 => r4c4<>3
  49. XYZ-Wing: 2/3/5 in r4c4,r6c67 => r6c5<>5
  50. XY-Chain: 3 3- r1c5 -7- r2c4 -3- r2c9 -5- r2c6 -1- r8c6 -3 => r7c5<>3
  51. Give Up: Don't know how to proceed!
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