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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Full House techniques.

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

Solution Steps:

  1. Row 3 / Column 6 → 3 (Hidden Single)
  2. Row 1 / Column 4 → 6 (Hidden Single)
  3. Row 2 / Column 9 → 1 (Hidden Single)
  4. Row 6 / Column 8 → 9 (Hidden Single)
  5. Row 8 / Column 3 → 3 (Hidden Single)
  6. Row 9 / Column 6 → 5 (Hidden Single)
  7. Row 8 / Column 5 → 8 (Hidden Single)
  8. Row 2 / Column 5 → 9 (Hidden Single)
  9. Row 1 / Column 6 → 8 (Hidden Single)
  10. Row 2 / Column 7 → 2 (Hidden Single)
  11. Row 2 / Column 8 → 5 (Hidden Single)
  12. Row 5 / Column 7 → 5 (Hidden Single)
  13. Row 4 / Column 5 → 5 (Hidden Single)
  14. Locked Pair: 7,8 in r9c78 => r9c13<>7, r7c79,r9c19<>8
  15. Row 9 / Column 9 → 2 (Naked Single)
  16. Locked Candidates Type 1 (Pointing): 1 in b5 => r6c1<>1
  17. Locked Candidates Type 1 (Pointing): 7 in b5 => r4c23<>7
  18. Locked Pair: 2,8 in r46c2 => r178c2,r4c3,r6c1<>2, r6c1,r7c2<>8
  19. Row 8 / Column 2 → 7 (Naked Single)
  20. Row 7 / Column 1 → 8 (Hidden Single)
  21. Row 7 / Column 2 → 5 (Hidden Single)
  22. Row 1 / Column 2 → 9 (Naked Single)
  23. Row 1 / Column 9 → 4 (Naked Single)
  24. Row 1 / Column 7 → 7 (Naked Single)
  25. Row 5 / Column 9 → 6 (Naked Single)
  26. Row 7 / Column 9 → 3 (Naked Single)
  27. Row 1 / Column 3 → 2 (Naked Single)
  28. Row 1 / Column 1 → 5 (Full House)
  29. Row 3 / Column 8 → 8 (Naked Single)
  30. Row 9 / Column 7 → 8 (Naked Single)
  31. Row 5 / Column 5 → 4 (Naked Single)
  32. Row 6 / Column 5 → 6 (Full House)
  33. Row 4 / Column 9 → 8 (Naked Single)
  34. Row 3 / Column 9 → 9 (Full House)
  35. Row 3 / Column 7 → 6 (Full House)
  36. Row 7 / Column 7 → 4 (Naked Single)
  37. Row 9 / Column 8 → 7 (Full House)
  38. Row 4 / Column 8 → 4 (Full House)
  39. Row 6 / Column 7 → 3 (Full House)
  40. Row 7 / Column 3 → 9 (Naked Single)
  41. Row 7 / Column 4 → 2 (Full House)
  42. Row 6 / Column 1 → 4 (Naked Single)
  43. Row 4 / Column 2 → 2 (Naked Single)
  44. Row 6 / Column 2 → 8 (Full House)
  45. Row 4 / Column 3 → 6 (Naked Single)
  46. Row 6 / Column 4 → 1 (Naked Single)
  47. Row 6 / Column 6 → 2 (Full House)
  48. Row 3 / Column 1 → 7 (Naked Single)
  49. Row 3 / Column 3 → 4 (Full House)
  50. Row 4 / Column 6 → 7 (Naked Single)
  51. Row 4 / Column 4 → 3 (Full House)
  52. Row 9 / Column 3 → 1 (Naked Single)
  53. Row 5 / Column 3 → 7 (Full House)
  54. Row 5 / Column 1 → 1 (Full House)
  55. Row 8 / Column 4 → 4 (Naked Single)
  56. Row 9 / Column 4 → 9 (Naked Single)
  57. Row 9 / Column 1 → 6 (Full House)
  58. Row 8 / Column 1 → 2 (Full House)
  59. Row 2 / Column 4 → 7 (Full House)
  60. Row 2 / Column 6 → 4 (Full House)
  61. Row 8 / Column 6 → 1 (Full House)
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