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

This Sudoku Puzzle has 64 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Hidden Triple 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 3 / Column 9 → 4 (Hidden Single)
  2. Row 3 / Column 5 → 7 (Hidden Single)
  3. Row 5 / Column 5 → 8 (Hidden Single)
  4. Row 4 / Column 8 → 7 (Hidden Single)
  5. Row 5 / Column 2 → 7 (Hidden Single)
  6. Row 2 / Column 8 → 8 (Hidden Single)
  7. Row 9 / Column 2 → 8 (Hidden Single)
  8. Row 3 / Column 3 → 8 (Hidden Single)
  9. Row 1 / Column 2 → 6 (Hidden Single)
  10. Row 2 / Column 4 → 6 (Hidden Single)
  11. Row 8 / Column 9 → 6 (Hidden Single)
  12. Row 7 / Column 4 → 7 (Hidden Single)
  13. Row 9 / Column 8 → 2 (Hidden Single)
  14. Row 2 / Column 7 → 9 (Hidden Single)
  15. Row 8 / Column 2 → 4 (Hidden Single)
  16. Row 7 / Column 7 → 4 (Hidden Single)
  17. Row 9 / Column 7 → 3 (Naked Single)
  18. Row 9 / Column 1 → 9 (Naked Single)
  19. Row 9 / Column 4 → 4 (Full House)
  20. Row 3 / Column 2 → 9 (Hidden Single)
  21. Locked Candidates Type 1 (Pointing): 1 in b2 => r5c6<>1
  22. Locked Candidates Type 1 (Pointing): 5 in b2 => r458c6<>5
  23. Locked Candidates Type 1 (Pointing): 3 in b3 => r1c3<>3
  24. Locked Candidates Type 1 (Pointing): 5 in b3 => r1c6<>5
  25. Locked Candidates Type 1 (Pointing): 9 in b8 => r8c8<>9
  26. Locked Candidates Type 1 (Pointing): 1 in b9 => r5c8<>1
  27. Locked Candidates Type 2 (Claiming): 5 in c7 => r5c89,r6c9<>5
  28. Naked Triple: 3,5,6 in r4c157 => r4c36<>3
  29. Hidden Triple: 1,5,6 in r5c147 => r5c1<>2, r5c1<>3, r5c4<>9
  30. Row 2 / Column 1 → 2 (Hidden Single)
  31. Row 1 / Column 3 → 1 (Naked Single)
  32. Row 2 / Column 6 → 5 (Naked Single)
  33. Row 2 / Column 2 → 3 (Full House)
  34. Row 3 / Column 1 → 5 (Full House)
  35. Row 3 / Column 6 → 1 (Full House)
  36. Row 1 / Column 6 → 2 (Full House)
  37. Row 6 / Column 2 → 5 (Full House)
  38. Row 8 / Column 3 → 3 (Naked Single)
  39. Row 7 / Column 1 → 1 (Full House)
  40. Row 5 / Column 1 → 6 (Naked Single)
  41. Row 4 / Column 1 → 3 (Full House)
  42. Row 8 / Column 6 → 9 (Naked Single)
  43. Row 4 / Column 6 → 4 (Naked Single)
  44. Row 5 / Column 6 → 3 (Full House)
  45. Row 8 / Column 4 → 5 (Naked Single)
  46. Row 7 / Column 5 → 3 (Full House)
  47. Row 8 / Column 8 → 1 (Full House)
  48. Row 4 / Column 3 → 9 (Naked Single)
  49. Row 5 / Column 8 → 9 (Naked Single)
  50. Row 6 / Column 5 → 6 (Naked Single)
  51. Row 4 / Column 5 → 5 (Full House)
  52. Row 4 / Column 7 → 6 (Full House)
  53. Row 5 / Column 4 → 1 (Naked Single)
  54. Row 6 / Column 4 → 9 (Full House)
  55. Row 6 / Column 3 → 2 (Naked Single)
  56. Row 5 / Column 3 → 4 (Full House)
  57. Row 5 / Column 9 → 2 (Naked Single)
  58. Row 5 / Column 7 → 5 (Full House)
  59. Row 6 / Column 7 → 1 (Full House)
  60. Row 6 / Column 9 → 3 (Full House)
  61. Row 7 / Column 8 → 5 (Naked Single)
  62. Row 1 / Column 8 → 3 (Full House)
  63. Row 1 / Column 9 → 5 (Full House)
  64. Row 7 / Column 9 → 9 (Full House)
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