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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Naked Single, Naked Triple, 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 2 / Column 2 → 4 (Hidden Single)
  2. Row 6 / Column 9 → 2 (Hidden Single)
  3. Row 1 / Column 5 → 2 (Hidden Single)
  4. Row 7 / Column 1 → 2 (Hidden Single)
  5. Row 7 / Column 6 → 4 (Hidden Single)
  6. Row 9 / Column 8 → 4 (Hidden Single)
  7. Row 4 / Column 2 → 2 (Hidden Single)
  8. Row 4 / Column 1 → 6 (Hidden Single)
  9. Row 6 / Column 3 → 3 (Hidden Single)
  10. Locked Candidates Type 1 (Pointing): 5 in b4 => r5c579<>5
  11. Locked Candidates Type 2 (Claiming): 5 in c5 => r8c46,r9c4<>5
  12. X-Wing: 6 r37 c39 => r1c39,r89c9,r9c3<>6
  13. X-Wing: 9 r57 c59 => r39c5,r89c9<>9
  14. Row 3 / Column 5 → 3 (Naked Single)
  15. Naked Triple: 3,5,7 in r7c7,r89c9 => r7c9,r8c8,r9c7<>5, r7c9,r8c8,r9c7<>7, r9c7<>3
  16. Row 9 / Column 7 → 1 (Naked Single)
  17. Row 1 / Column 7 → 3 (Hidden Single)
  18. Row 8 / Column 1 → 1 (Hidden Single)
  19. Row 2 / Column 1 → 3 (Hidden Single)
  20. Row 3 / Column 3 → 1 (Hidden Single)
  21. Row 8 / Column 9 → 5 (Hidden Single)
  22. Row 7 / Column 7 → 7 (Naked Single)
  23. Row 9 / Column 9 → 3 (Naked Single)
  24. Row 3 / Column 9 → 6 (Hidden Single)
  25. Row 7 / Column 9 → 9 (Naked Single)
  26. Row 8 / Column 8 → 6 (Full House)
  27. Row 7 / Column 5 → 5 (Naked Single)
  28. Row 7 / Column 3 → 6 (Full House)
  29. Row 9 / Column 5 → 7 (Naked Single)
  30. Row 5 / Column 5 → 9 (Full House)
  31. Row 1 / Column 2 → 6 (Hidden Single)
  32. Row 4 / Column 7 → 5 (Hidden Single)
  33. Row 4 / Column 8 → 7 (Naked Single)
  34. Row 6 / Column 8 → 9 (Naked Single)
  35. Row 3 / Column 7 → 4 (Hidden Single)
  36. Row 5 / Column 7 → 8 (Full House)
  37. Row 5 / Column 9 → 4 (Full House)
  38. Row 9 / Column 4 → 6 (Hidden Single)
  39. Row 8 / Column 2 → 7 (Hidden Single)
  40. Row 6 / Column 2 → 8 (Naked Single)
  41. Row 9 / Column 2 → 9 (Full House)
  42. Row 6 / Column 6 → 5 (Naked Single)
  43. Row 6 / Column 4 → 7 (Full House)
  44. Row 2 / Column 9 → 7 (Hidden Single)
  45. Row 1 / Column 9 → 8 (Full House)
  46. Row 1 / Column 3 → 7 (Naked Single)
  47. Row 1 / Column 1 → 9 (Naked Single)
  48. Row 3 / Column 1 → 8 (Full House)
  49. Row 3 / Column 4 → 9 (Full House)
  50. Row 5 / Column 3 → 5 (Naked Single)
  51. Row 5 / Column 1 → 7 (Full House)
  52. Row 9 / Column 1 → 5 (Full House)
  53. Row 9 / Column 3 → 8 (Full House)
  54. Row 1 / Column 6 → 1 (Naked Single)
  55. Row 1 / Column 8 → 5 (Full House)
  56. Row 2 / Column 8 → 1 (Full House)
  57. Row 8 / Column 4 → 3 (Naked Single)
  58. Row 8 / Column 6 → 9 (Full House)
  59. Row 2 / Column 6 → 8 (Naked Single)
  60. Row 2 / Column 4 → 5 (Full House)
  61. Row 4 / Column 4 → 8 (Full House)
  62. Row 4 / Column 6 → 3 (Full House)
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