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

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

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

Solution Steps:

  1. Row 1 / Column 6 → 7 (Hidden Single)
  2. Row 2 / Column 8 → 9 (Hidden Single)
  3. Row 1 / Column 3 → 1 (Hidden Single)
  4. Row 4 / Column 2 → 9 (Hidden Single)
  5. Row 2 / Column 7 → 8 (Hidden Single)
  6. Row 1 / Column 1 → 8 (Hidden Single)
  7. Row 9 / Column 6 → 9 (Hidden Single)
  8. Row 5 / Column 5 → 9 (Hidden Single)
  9. Row 6 / Column 2 → 2 (Hidden Single)
  10. Row 2 / Column 5 → 3 (Hidden Single)
  11. Row 5 / Column 7 → 1 (Hidden Single)
  12. Row 6 / Column 7 → 5 (Naked Single)
  13. Row 6 / Column 8 → 8 (Naked Single)
  14. Row 5 / Column 9 → 4 (Naked Single)
  15. Row 5 / Column 8 → 7 (Naked Single)
  16. Row 5 / Column 1 → 5 (Naked Single)
  17. Row 5 / Column 3 → 8 (Full House)
  18. Row 4 / Column 3 → 7 (Full House)
  19. Row 3 / Column 1 → 9 (Naked Single)
  20. Row 7 / Column 5 → 1 (Hidden Single)
  21. Row 9 / Column 9 → 8 (Hidden Single)
  22. Row 7 / Column 3 → 9 (Hidden Single)
  23. Row 3 / Column 9 → 3 (Hidden Single)
  24. Locked Candidates Type 1 (Pointing): 2 in b2 => r89c5<>2
  25. Locked Candidates Type 1 (Pointing): 5 in b3 => r1c5<>5
  26. Naked Triple: 4,5,8 in r8c256 => r8c48<>4, r8c48<>5
  27. Naked Pair: 2,3 in r48c8 => r19c8<>2, r9c8<>3
  28. Naked Pair: 4,5 in r9c38 => r9c457<>4, r9c45<>5
  29. Row 9 / Column 5 → 6 (Naked Single)
  30. Row 1 / Column 7 → 6 (Hidden Single)
  31. Row 3 / Column 6 → 6 (Hidden Single)
  32. Row 6 / Column 6 → 1 (Naked Single)
  33. Row 6 / Column 4 → 6 (Full House)
  34. Row 2 / Column 4 → 1 (Hidden Single)
  35. Naked Pair: 2,7 in r89c4 => r7c4<>2, r7c4<>7
  36. Remote Pair: 4/5 r1c8 -5- r9c8 -4- r9c3 -5- r3c3 -4- r2c2 -5- r2c6 => r1c5,r3c7<>4
  37. Row 1 / Column 5 → 2 (Naked Single)
  38. Row 3 / Column 7 → 2 (Naked Single)
  39. Row 1 / Column 9 → 5 (Naked Single)
  40. Row 1 / Column 8 → 4 (Full House)
  41. Row 7 / Column 9 → 2 (Full House)
  42. Row 4 / Column 7 → 3 (Naked Single)
  43. Row 4 / Column 8 → 2 (Full House)
  44. Row 9 / Column 8 → 5 (Naked Single)
  45. Row 8 / Column 8 → 3 (Full House)
  46. Row 7 / Column 1 → 7 (Naked Single)
  47. Row 9 / Column 7 → 7 (Naked Single)
  48. Row 7 / Column 7 → 4 (Full House)
  49. Row 7 / Column 4 → 5 (Full House)
  50. Row 9 / Column 3 → 4 (Naked Single)
  51. Row 3 / Column 3 → 5 (Full House)
  52. Row 2 / Column 2 → 4 (Full House)
  53. Row 8 / Column 2 → 5 (Full House)
  54. Row 3 / Column 5 → 4 (Full House)
  55. Row 2 / Column 6 → 5 (Full House)
  56. Row 8 / Column 1 → 2 (Naked Single)
  57. Row 9 / Column 1 → 3 (Full House)
  58. Row 9 / Column 4 → 2 (Full House)
  59. Row 4 / Column 4 → 4 (Naked Single)
  60. Row 8 / Column 4 → 7 (Full House)
  61. Row 8 / Column 5 → 8 (Naked Single)
  62. Row 4 / Column 5 → 5 (Full House)
  63. Row 4 / Column 6 → 8 (Full House)
  64. Row 8 / Column 6 → 4 (Full House)
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