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

This Sudoku Puzzle has 68 steps and it is solved using Naked Single, Hidden Single, Locked Pair, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), 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 5 / Column 6 → 9 (Naked Single)
  2. Row 4 / Column 6 → 1 (Naked Single)
  3. Row 5 / Column 7 → 2 (Naked Single)
  4. Row 6 / Column 5 → 5 (Hidden Single)
  5. Row 6 / Column 7 → 9 (Naked Single)
  6. Row 8 / Column 3 → 4 (Hidden Single)
  7. Row 7 / Column 9 → 4 (Hidden Single)
  8. Locked Pair: 1,8 in r6c89 => r4c89,r5c8,r6c124<>8
  9. Row 5 / Column 8 → 6 (Naked Single)
  10. Locked Candidates Type 1 (Pointing): 1 in b1 => r789c1<>1
  11. Locked Candidates Type 1 (Pointing): 2 in b5 => r12c4<>2
  12. Locked Candidates Type 1 (Pointing): 3 in b8 => r123c5<>3
  13. Locked Candidates Type 1 (Pointing): 7 in b8 => r23c4<>7
  14. Locked Candidates Type 1 (Pointing): 8 in b9 => r9c123<>8
  15. Locked Candidates Type 2 (Claiming): 7 in r8 => r7c12,r9c123<>7
  16. Locked Candidates Type 2 (Claiming): 7 in c3 => r2c12,r3c1<>7
  17. Naked Triple: 3,4,5 in r23c8,r3c7 => r12c9<>3, r2c9<>5
  18. Row 1 / Column 1 → 3 (Hidden Single)
  19. Row 3 / Column 1 → 1 (Hidden Single)
  20. Row 2 / Column 1 → 5 (Hidden Single)
  21. Locked Pair: 2,9 in r9c13 => r8c12,r9c28<>2, r8c1,r9c4<>9
  22. Row 8 / Column 1 → 7 (Naked Single)
  23. Row 8 / Column 5 → 9 (Hidden Single)
  24. Row 8 / Column 8 → 2 (Hidden Single)
  25. Row 6 / Column 2 → 7 (Hidden Single)
  26. Row 7 / Column 5 → 3 (Hidden Single)
  27. Row 7 / Column 7 → 7 (Naked Single)
  28. Row 7 / Column 4 → 1 (Naked Single)
  29. Row 9 / Column 4 → 7 (Full House)
  30. Row 1 / Column 5 → 1 (Hidden Single)
  31. Row 1 / Column 3 → 2 (Hidden Single)
  32. Row 9 / Column 3 → 9 (Naked Single)
  33. Row 9 / Column 1 → 2 (Naked Single)
  34. Row 6 / Column 1 → 4 (Naked Single)
  35. Row 5 / Column 1 → 8 (Naked Single)
  36. Row 5 / Column 5 → 4 (Full House)
  37. Row 6 / Column 4 → 2 (Naked Single)
  38. Row 4 / Column 4 → 8 (Full House)
  39. Row 4 / Column 3 → 6 (Naked Single)
  40. Row 7 / Column 1 → 6 (Naked Single)
  41. Row 4 / Column 1 → 9 (Full House)
  42. Row 4 / Column 2 → 2 (Full House)
  43. Row 7 / Column 2 → 8 (Full House)
  44. Row 3 / Column 5 → 8 (Naked Single)
  45. Row 2 / Column 5 → 2 (Full House)
  46. Row 2 / Column 2 → 6 (Naked Single)
  47. Row 3 / Column 3 → 7 (Naked Single)
  48. Row 2 / Column 3 → 8 (Full House)
  49. Row 2 / Column 9 → 9 (Naked Single)
  50. Row 3 / Column 6 → 3 (Naked Single)
  51. Row 2 / Column 6 → 7 (Full House)
  52. Row 1 / Column 9 → 6 (Naked Single)
  53. Row 1 / Column 4 → 9 (Full House)
  54. Row 2 / Column 4 → 4 (Naked Single)
  55. Row 2 / Column 8 → 3 (Full House)
  56. Row 3 / Column 4 → 6 (Full House)
  57. Row 3 / Column 7 → 5 (Naked Single)
  58. Row 3 / Column 8 → 4 (Full House)
  59. Row 9 / Column 7 → 3 (Full House)
  60. Row 4 / Column 8 → 5 (Naked Single)
  61. Row 4 / Column 9 → 3 (Full House)
  62. Row 8 / Column 9 → 1 (Naked Single)
  63. Row 8 / Column 2 → 3 (Full House)
  64. Row 9 / Column 2 → 1 (Full House)
  65. Row 6 / Column 9 → 8 (Naked Single)
  66. Row 6 / Column 8 → 1 (Full House)
  67. Row 9 / Column 8 → 8 (Full House)
  68. Row 9 / Column 9 → 5 (Full House)
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