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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Locked Pair, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 2 → 2 (Hidden Single)
  2. Row 1 / Column 7 → 5 (Hidden Single)
  3. Row 5 / Column 8 → 1 (Hidden Single)
  4. Row 3 / Column 9 → 7 (Hidden Single)
  5. Row 5 / Column 2 → 9 (Hidden Single)
  6. Row 4 / Column 8 → 7 (Hidden Single)
  7. Row 2 / Column 2 → 7 (Hidden Single)
  8. Row 1 / Column 9 → 1 (Hidden Single)
  9. Row 5 / Column 3 → 7 (Hidden Single)
  10. Row 3 / Column 2 → 1 (Hidden Single)
  11. Row 1 / Column 2 → 3 (Hidden Single)
  12. Row 3 / Column 6 → 8 (Hidden Single)
  13. Row 1 / Column 3 → 8 (Hidden Single)
  14. Row 3 / Column 5 → 4 (Hidden Single)
  15. Row 9 / Column 3 → 2 (Hidden Single)
  16. Row 9 / Column 6 → 1 (Hidden Single)
  17. Row 8 / Column 3 → 1 (Hidden Single)
  18. Row 2 / Column 5 → 1 (Hidden Single)
  19. Locked Candidates Type 1 (Pointing): 6 in b1 => r79c1<>6
  20. Locked Candidates Type 1 (Pointing): 3 in b2 => r2c78<>3
  21. Locked Candidates Type 1 (Pointing): 9 in b3 => r2c46<>9
  22. Locked Candidates Type 1 (Pointing): 4 in b4 => r4c6<>4
  23. Locked Candidates Type 1 (Pointing): 6 in b4 => r4c56<>6
  24. Locked Candidates Type 1 (Pointing): 4 in b6 => r9c7<>4
  25. Locked Candidates Type 1 (Pointing): 8 in b9 => r6c8<>8
  26. Row 6 / Column 8 → 6 (Naked Single)
  27. Row 6 / Column 5 → 9 (Naked Single)
  28. Locked Candidates Type 1 (Pointing): 6 in b3 => r9c7<>6
  29. Locked Pair: 3,9 in r9c78 => r78c8,r9c14<>9, r7c8,r9c4<>3
  30. Row 9 / Column 1 → 7 (Naked Single)
  31. Row 7 / Column 1 → 9 (Naked Single)
  32. Row 7 / Column 4 → 7 (Hidden Single)
  33. Row 7 / Column 5 → 3 (Hidden Single)
  34. Row 4 / Column 5 → 5 (Naked Single)
  35. Row 8 / Column 5 → 6 (Full House)
  36. Row 4 / Column 6 → 3 (Naked Single)
  37. Row 9 / Column 4 → 4 (Naked Single)
  38. Row 2 / Column 6 → 6 (Naked Single)
  39. Row 6 / Column 4 → 8 (Naked Single)
  40. Row 6 / Column 7 → 4 (Full House)
  41. Row 5 / Column 7 → 8 (Full House)
  42. Row 8 / Column 4 → 9 (Naked Single)
  43. Row 8 / Column 6 → 5 (Full House)
  44. Row 9 / Column 9 → 6 (Naked Single)
  45. Row 7 / Column 9 → 4 (Full House)
  46. Row 1 / Column 6 → 9 (Naked Single)
  47. Row 5 / Column 6 → 4 (Full House)
  48. Row 5 / Column 4 → 6 (Full House)
  49. Row 2 / Column 7 → 9 (Naked Single)
  50. Row 1 / Column 4 → 2 (Naked Single)
  51. Row 1 / Column 1 → 6 (Full House)
  52. Row 2 / Column 4 → 3 (Full House)
  53. Row 2 / Column 8 → 2 (Full House)
  54. Row 3 / Column 1 → 2 (Full House)
  55. Row 8 / Column 8 → 8 (Naked Single)
  56. Row 8 / Column 2 → 4 (Full House)
  57. Row 7 / Column 3 → 6 (Naked Single)
  58. Row 4 / Column 3 → 4 (Full House)
  59. Row 4 / Column 2 → 6 (Full House)
  60. Row 7 / Column 2 → 8 (Full House)
  61. Row 7 / Column 8 → 5 (Full House)
  62. Row 9 / Column 7 → 3 (Naked Single)
  63. Row 3 / Column 7 → 6 (Full House)
  64. Row 3 / Column 8 → 3 (Full House)
  65. Row 9 / Column 8 → 9 (Full House)
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