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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Full House, Naked Triple, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Locked Pair, Hidden Pair, undefined techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 4 / Column 4 → 1 (Naked Single)
  2. Row 4 / Column 2 → 3 (Hidden Single)
  3. Row 5 / Column 5 → 2 (Hidden Single)
  4. Row 8 / Column 6 → 1 (Hidden Single)
  5. Row 6 / Column 2 → 5 (Hidden Single)
  6. Row 4 / Column 6 → 5 (Hidden Single)
  7. Row 4 / Column 8 → 8 (Full House)
  8. Row 6 / Column 8 → 9 (Naked Single)
  9. Row 5 / Column 8 → 5 (Naked Single)
  10. Row 6 / Column 3 → 4 (Hidden Single)
  11. Row 6 / Column 6 → 8 (Hidden Single)
  12. Naked Triple: 2,3,7 in r7c6,r89c4 => r79c5<>3, r79c5<>7
  13. Locked Candidates Type 1 (Pointing): 3 in b8 => r2c4<>3
  14. Locked Candidates Type 2 (Claiming): 3 in r2 => r13c9,r3c8<>3
  15. Row 3 / Column 8 → 7 (Naked Single)
  16. Row 2 / Column 7 → 2 (Naked Single)
  17. Row 1 / Column 6 → 2 (Hidden Single)
  18. Row 7 / Column 6 → 7 (Naked Single)
  19. Row 2 / Column 6 → 9 (Full House)
  20. Row 7 / Column 1 → 2 (Hidden Single)
  21. Row 9 / Column 7 → 7 (Hidden Single)
  22. Row 9 / Column 1 → 8 (Hidden Single)
  23. Locked Pair: 3,4 in r2c89 => r1c9,r2c2<>4
  24. Naked Triple: 4,6,7 in r278c2 => r19c2<>4, r1c2<>7
  25. Row 1 / Column 1 → 4 (Hidden Single)
  26. Naked Triple: 1,5,9 in r1c279 => r1c3<>1, r1c3<>9
  27. Hidden Pair: 1,9 in r9c23 => r9c3<>3
  28. W-Wing: 3/7 in r1c3,r8c1 connected by 7 in r5c13 => r3c1,r7c3<>3
  29. Row 3 / Column 1 → 9 (Naked Single)
  30. Row 7 / Column 3 → 6 (Naked Single)
  31. Row 1 / Column 2 → 1 (Naked Single)
  32. Row 5 / Column 1 → 7 (Naked Single)
  33. Row 5 / Column 3 → 9 (Full House)
  34. Row 8 / Column 1 → 3 (Full House)
  35. Row 7 / Column 2 → 4 (Naked Single)
  36. Row 1 / Column 7 → 5 (Naked Single)
  37. Row 3 / Column 3 → 3 (Naked Single)
  38. Row 9 / Column 2 → 9 (Naked Single)
  39. Row 9 / Column 3 → 1 (Naked Single)
  40. Row 8 / Column 2 → 7 (Full House)
  41. Row 1 / Column 3 → 7 (Full House)
  42. Row 2 / Column 2 → 6 (Full House)
  43. Row 8 / Column 4 → 2 (Naked Single)
  44. Row 7 / Column 5 → 5 (Naked Single)
  45. Row 1 / Column 9 → 9 (Naked Single)
  46. Row 1 / Column 5 → 3 (Full House)
  47. Row 7 / Column 7 → 8 (Naked Single)
  48. Row 7 / Column 9 → 3 (Full House)
  49. Row 3 / Column 5 → 6 (Naked Single)
  50. Row 2 / Column 4 → 7 (Full House)
  51. Row 8 / Column 8 → 4 (Naked Single)
  52. Row 8 / Column 9 → 6 (Full House)
  53. Row 9 / Column 4 → 3 (Naked Single)
  54. Row 9 / Column 5 → 4 (Full House)
  55. Row 6 / Column 5 → 7 (Full House)
  56. Row 6 / Column 4 → 6 (Full House)
  57. Row 3 / Column 7 → 1 (Naked Single)
  58. Row 3 / Column 9 → 8 (Full House)
  59. Row 5 / Column 7 → 6 (Full House)
  60. Row 5 / Column 9 → 1 (Full House)
  61. Row 2 / Column 9 → 4 (Naked Single)
  62. Row 2 / Column 8 → 3 (Full House)
  63. Row 9 / Column 8 → 2 (Full House)
  64. Row 9 / Column 9 → 5 (Full House)
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