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.

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Locked Candidates Explanation
Full House Explanation
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)
Show More...