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

This Sudoku Puzzle has 76 steps and it is solved using Locked Candidates Type 1 (Pointing), Hidden Single, Naked Single, Locked Candidates Type 2 (Claiming), Naked Triple, Naked Pair, Hidden Triple, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Locked Candidates Type 1 (Pointing): 5 in b2 => r3c2<>5
  2. Row 2 / Column 2 → 5 (Hidden Single)
  3. Locked Candidates Type 1 (Pointing): 7 in b2 => r1c23<>7
  4. Locked Candidates Type 1 (Pointing): 9 in b2 => r1c7<>9
  5. Locked Candidates Type 1 (Pointing): 6 in b4 => r23c1<>6
  6. Locked Candidates Type 1 (Pointing): 9 in b4 => r78c1<>9
  7. Locked Candidates Type 1 (Pointing): 8 in b5 => r13c4<>8
  8. Row 3 / Column 4 → 6 (Naked Single)
  9. Row 1 / Column 2 → 6 (Hidden Single)
  10. Locked Candidates Type 1 (Pointing): 3 in b6 => r3c9<>3
  11. Locked Candidates Type 1 (Pointing): 4 in b6 => r12c7<>4
  12. Locked Candidates Type 1 (Pointing): 5 in b6 => r8c7<>5
  13. Row 8 / Column 8 → 5 (Hidden Single)
  14. Locked Candidates Type 1 (Pointing): 3 in b8 => r9c3<>3
  15. Locked Candidates Type 2 (Claiming): 7 in c2 => r78c1,r89c3<>7
  16. Naked Triple: 4,7,8 in r2c13,r3c2 => r1c3,r3c1<>4, r1c3,r3c1<>8
  17. Naked Pair: 2,3 in r38c1 => r7c1<>2
  18. Naked Triple: 4,5,8 in r3c256 => r3c8<>4, r3c9<>8
  19. Hidden Triple: 1,2,3 in r8c13,r9c3 => r9c3<>8
  20. Hidden Triple: 7,8,9 in r278c9 => r2c9<>6, r78c9<>1, r78c9<>2
  21. Locked Candidates Type 2 (Claiming): 6 in c9 => r46c7<>6
  22. Naked Pair: 7,9 in r8c29 => r8c7<>9
  23. Naked Pair: 1,2 in r7c8,r8c7 => r9c78<>1, r9c78<>2
  24. Row 9 / Column 8 → 6 (Naked Single)
  25. Row 2 / Column 8 → 4 (Naked Single)
  26. Row 2 / Column 7 → 6 (Hidden Single)
  27. Row 3 / Column 2 → 4 (Hidden Single)
  28. Row 3 / Column 6 → 5 (Naked Single)
  29. Row 3 / Column 5 → 8 (Naked Single)
  30. Row 2 / Column 9 → 9 (Hidden Single)
  31. Row 8 / Column 9 → 7 (Naked Single)
  32. Row 7 / Column 9 → 8 (Naked Single)
  33. Row 8 / Column 2 → 9 (Naked Single)
  34. Row 7 / Column 1 → 4 (Naked Single)
  35. Row 9 / Column 7 → 9 (Naked Single)
  36. Row 7 / Column 2 → 7 (Naked Single)
  37. Row 9 / Column 2 → 8 (Full House)
  38. Row 9 / Column 5 → 3 (Naked Single)
  39. Row 7 / Column 5 → 5 (Hidden Single)
  40. Row 1 / Column 7 → 8 (Hidden Single)
  41. Row 5 / Column 9 → 3 (Hidden Single)
  42. Row 6 / Column 4 → 3 (Hidden Single)
  43. Row 5 / Column 7 → 1 (Hidden Single)
  44. Row 8 / Column 7 → 2 (Naked Single)
  45. Row 7 / Column 8 → 1 (Full House)
  46. Row 8 / Column 1 → 3 (Naked Single)
  47. Row 8 / Column 3 → 1 (Full House)
  48. Row 9 / Column 3 → 2 (Full House)
  49. Row 3 / Column 1 → 2 (Naked Single)
  50. Row 1 / Column 3 → 3 (Naked Single)
  51. Row 9 / Column 4 → 7 (Naked Single)
  52. Row 9 / Column 6 → 1 (Full House)
  53. Row 3 / Column 8 → 3 (Naked Single)
  54. Row 3 / Column 9 → 1 (Full House)
  55. Row 1 / Column 8 → 2 (Full House)
  56. Row 1 / Column 4 → 9 (Naked Single)
  57. Row 1 / Column 5 → 4 (Naked Single)
  58. Row 1 / Column 6 → 7 (Full House)
  59. Row 5 / Column 5 → 9 (Full House)
  60. Row 7 / Column 4 → 2 (Naked Single)
  61. Row 4 / Column 4 → 8 (Full House)
  62. Row 7 / Column 6 → 9 (Full House)
  63. Row 5 / Column 1 → 7 (Naked Single)
  64. Row 5 / Column 3 → 4 (Full House)
  65. Row 2 / Column 1 → 8 (Naked Single)
  66. Row 2 / Column 3 → 7 (Full House)
  67. Row 4 / Column 3 → 5 (Naked Single)
  68. Row 6 / Column 3 → 8 (Full House)
  69. Row 6 / Column 1 → 6 (Naked Single)
  70. Row 4 / Column 1 → 9 (Full House)
  71. Row 4 / Column 7 → 4 (Naked Single)
  72. Row 6 / Column 7 → 5 (Full House)
  73. Row 6 / Column 9 → 2 (Naked Single)
  74. Row 4 / Column 9 → 6 (Full House)
  75. Row 4 / Column 6 → 2 (Full House)
  76. Row 6 / Column 6 → 4 (Full House)
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