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

This Sudoku Puzzle has 68 steps and it is solved using Hidden Single, Naked Single, Locked Pair, Locked Candidates Type 1 (Pointing), Naked Triple, Hidden Pair, Skyscraper, Full House techniques.

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

Solution Steps:

  1. Row 5 / Column 6 → 9 (Hidden Single)
  2. Row 1 / Column 7 → 4 (Hidden Single)
  3. Row 9 / Column 3 → 4 (Hidden Single)
  4. Row 5 / Column 4 → 4 (Hidden Single)
  5. Row 1 / Column 3 → 9 (Hidden Single)
  6. Row 3 / Column 1 → 5 (Naked Single)
  7. Row 2 / Column 1 → 1 (Naked Single)
  8. Row 3 / Column 9 → 9 (Hidden Single)
  9. Row 7 / Column 6 → 4 (Hidden Single)
  10. Row 8 / Column 1 → 9 (Hidden Single)
  11. Row 2 / Column 5 → 5 (Hidden Single)
  12. Row 9 / Column 5 → 9 (Hidden Single)
  13. Row 8 / Column 6 → 7 (Hidden Single)
  14. Row 7 / Column 7 → 9 (Hidden Single)
  15. Row 2 / Column 9 → 2 (Hidden Single)
  16. Row 7 / Column 5 → 2 (Hidden Single)
  17. Row 3 / Column 4 → 2 (Hidden Single)
  18. Row 6 / Column 8 → 2 (Hidden Single)
  19. Locked Pair: 3,6 in r23c6 => r1c46,r9c6<>3, r1c46,r9c6<>6
  20. Locked Candidates Type 1 (Pointing): 8 in b7 => r4c2<>8
  21. Naked Triple: 1,6,8 in r9c269 => r9c48<>1, r9c48<>6, r9c4<>8
  22. Hidden Pair: 3,5 in r8c7,r9c8 => r8c7<>6, r8c7<>8
  23. Locked Candidates Type 1 (Pointing): 8 in b9 => r46c9<>8
  24. Skyscraper: 6 in r1c8,r9c9 (connected by r19c2) => r7c8<>6
  25. Locked Candidates Type 1 (Pointing): 6 in b9 => r46c9<>6
  26. Locked Candidates Type 1 (Pointing): 6 in b6 => r2c7<>6
  27. Naked Triple: 3,5,7 in r258c7 => r4c7<>5, r4c7<>7
  28. Row 4 / Column 2 → 5 (Hidden Single)
  29. Locked Candidates Type 1 (Pointing): 3 in b4 => r2c3<>3
  30. Skyscraper: 7 in r2c7,r4c9 (connected by r24c3) => r5c7<>7
  31. Row 5 / Column 7 → 5 (Naked Single)
  32. Row 8 / Column 7 → 3 (Naked Single)
  33. Row 2 / Column 7 → 7 (Naked Single)
  34. Row 9 / Column 8 → 5 (Naked Single)
  35. Row 2 / Column 3 → 6 (Naked Single)
  36. Row 2 / Column 6 → 3 (Full House)
  37. Row 9 / Column 4 → 3 (Naked Single)
  38. Row 1 / Column 2 → 3 (Naked Single)
  39. Row 3 / Column 2 → 7 (Full House)
  40. Row 8 / Column 3 → 1 (Naked Single)
  41. Row 3 / Column 6 → 6 (Naked Single)
  42. Row 3 / Column 8 → 3 (Full House)
  43. Row 1 / Column 8 → 6 (Full House)
  44. Row 5 / Column 2 → 1 (Naked Single)
  45. Row 5 / Column 8 → 7 (Full House)
  46. Row 7 / Column 8 → 1 (Full House)
  47. Row 6 / Column 3 → 3 (Naked Single)
  48. Row 4 / Column 3 → 7 (Full House)
  49. Row 8 / Column 5 → 6 (Naked Single)
  50. Row 6 / Column 5 → 1 (Naked Single)
  51. Row 4 / Column 5 → 3 (Full House)
  52. Row 4 / Column 4 → 6 (Full House)
  53. Row 7 / Column 4 → 8 (Naked Single)
  54. Row 8 / Column 9 → 8 (Naked Single)
  55. Row 8 / Column 4 → 5 (Full House)
  56. Row 1 / Column 4 → 1 (Full House)
  57. Row 9 / Column 6 → 1 (Full House)
  58. Row 1 / Column 6 → 8 (Full House)
  59. Row 6 / Column 9 → 4 (Naked Single)
  60. Row 4 / Column 7 → 8 (Naked Single)
  61. Row 6 / Column 7 → 6 (Full House)
  62. Row 4 / Column 9 → 1 (Full House)
  63. Row 6 / Column 1 → 8 (Full House)
  64. Row 4 / Column 1 → 4 (Full House)
  65. Row 7 / Column 2 → 6 (Naked Single)
  66. Row 7 / Column 9 → 7 (Full House)
  67. Row 9 / Column 9 → 6 (Full House)
  68. Row 9 / Column 2 → 8 (Full House)
Show More...