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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined, Full House techniques.

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Locked Candidates Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 7 → 1 (Naked Single)
  2. Row 3 / Column 2 → 5 (Hidden Single)
  3. Row 5 / Column 4 → 2 (Hidden Single)
  4. Row 4 / Column 8 → 2 (Hidden Single)
  5. Row 1 / Column 9 → 2 (Hidden Single)
  6. Row 8 / Column 2 → 2 (Hidden Single)
  7. Row 9 / Column 4 → 9 (Hidden Single)
  8. Row 4 / Column 5 → 9 (Hidden Single)
  9. Row 6 / Column 9 → 5 (Hidden Single)
  10. Row 9 / Column 2 → 3 (Hidden Single)
  11. Row 7 / Column 2 → 7 (Hidden Single)
  12. Locked Candidates Type 1 (Pointing): 6 in b4 => r79c3<>6
  13. Locked Candidates Type 1 (Pointing): 4 in b8 => r1c6<>4
  14. Locked Candidates Type 1 (Pointing): 8 in b8 => r146c6<>8
  15. Locked Candidates Type 1 (Pointing): 1 in b9 => r2c9<>1
  16. Locked Candidates Type 2 (Claiming): 1 in c2 => r4c1,r6c3<>1
  17. Locked Candidates Type 2 (Claiming): 8 in c2 => r4c1,r6c3<>8
  18. Naked Triple: 3,4,6 in r367c8 => r12c8<>3, r1c8<>4, r2c8<>6
  19. Locked Candidates Type 1 (Pointing): 6 in b3 => r3c4<>6
  20. W-Wing: 7/3 in r1c6,r2c9 connected by 3 in r12c3 => r1c7,r2c45<>7
  21. Row 2 / Column 9 → 7 (Hidden Single)
  22. W-Wing: 4/3 in r3c9,r4c7 connected by 3 in r8c79 => r13c7<>4
  23. Row 1 / Column 4 → 4 (Hidden Single)
  24. Row 1 / Column 6 → 7 (Hidden Single)
  25. Row 6 / Column 4 → 7 (Hidden Single)
  26. Row 9 / Column 7 → 7 (Hidden Single)
  27. Row 8 / Column 5 → 7 (Hidden Single)
  28. Row 2 / Column 4 → 6 (Hidden Single)
  29. Row 2 / Column 5 → 8 (Naked Single)
  30. Row 3 / Column 4 → 3 (Full House)
  31. Row 6 / Column 5 → 6 (Full House)
  32. Row 4 / Column 4 → 8 (Full House)
  33. Row 3 / Column 9 → 4 (Naked Single)
  34. Row 5 / Column 6 → 5 (Naked Single)
  35. Row 5 / Column 3 → 6 (Full House)
  36. Row 6 / Column 3 → 4 (Naked Single)
  37. Row 4 / Column 2 → 1 (Naked Single)
  38. Row 6 / Column 2 → 8 (Full House)
  39. Row 4 / Column 1 → 5 (Full House)
  40. Row 3 / Column 8 → 6 (Naked Single)
  41. Row 3 / Column 7 → 8 (Full House)
  42. Row 9 / Column 9 → 1 (Naked Single)
  43. Row 8 / Column 9 → 3 (Full House)
  44. Row 6 / Column 8 → 3 (Naked Single)
  45. Row 4 / Column 7 → 4 (Full House)
  46. Row 4 / Column 6 → 3 (Full House)
  47. Row 6 / Column 6 → 1 (Full House)
  48. Row 7 / Column 8 → 4 (Naked Single)
  49. Row 8 / Column 7 → 6 (Full House)
  50. Row 1 / Column 7 → 3 (Full House)
  51. Row 9 / Column 3 → 8 (Naked Single)
  52. Row 8 / Column 6 → 4 (Naked Single)
  53. Row 8 / Column 1 → 1 (Full House)
  54. Row 1 / Column 3 → 1 (Naked Single)
  55. Row 7 / Column 1 → 6 (Naked Single)
  56. Row 7 / Column 3 → 5 (Naked Single)
  57. Row 2 / Column 3 → 3 (Full House)
  58. Row 7 / Column 6 → 8 (Full House)
  59. Row 9 / Column 6 → 6 (Full House)
  60. Row 9 / Column 1 → 4 (Full House)
  61. Row 2 / Column 1 → 9 (Naked Single)
  62. Row 1 / Column 1 → 8 (Full House)
  63. Row 1 / Column 8 → 9 (Full House)
  64. Row 2 / Column 8 → 1 (Full House)
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