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

This Sudoku Puzzle has 63 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined, Naked Pair, Skyscraper, Full House, Empty Rectangle 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 5 / Column 3 → 4 (Naked Single)
  2. Row 2 / Column 8 → 9 (Hidden Single)
  3. Row 6 / Column 2 → 9 (Hidden Single)
  4. Row 5 / Column 6 → 9 (Hidden Single)
  5. Row 1 / Column 8 → 2 (Hidden Single)
  6. Row 3 / Column 8 → 3 (Hidden Single)
  7. Locked Candidates Type 1 (Pointing): 4 in b1 => r8c1<>4
  8. Locked Candidates Type 1 (Pointing): 1 in b2 => r469c4<>1
  9. Locked Candidates Type 1 (Pointing): 8 in b2 => r9c4<>8
  10. Locked Candidates Type 1 (Pointing): 5 in b6 => r13c7<>5
  11. Locked Candidates Type 2 (Claiming): 1 in c8 => r4c7,r6c9<>1
  12. Locked Candidates Type 2 (Claiming): 4 in c8 => r4c7,r6c9<>4
  13. Naked Triple: 2,5,8 in r347c2 => r89c2<>2, r8c2<>5, r9c2<>8
  14. Locked Candidates Type 1 (Pointing): 5 in b7 => r7c6<>5
  15. W-Wing: 8/2 in r6c3,r7c1 connected by 2 in r2c13 => r79c3<>8
  16. Row 9 / Column 6 → 8 (Hidden Single)
  17. Naked Pair: 1,2 in r67c6 => r48c6<>1, r48c6<>2
  18. Skyscraper: 2 in r4c2,r6c6 (connected by r7c26) => r4c4,r6c3<>2
  19. Row 6 / Column 3 → 8 (Naked Single)
  20. Row 4 / Column 2 → 2 (Full House)
  21. Row 6 / Column 9 → 6 (Naked Single)
  22. Row 5 / Column 7 → 5 (Naked Single)
  23. Row 5 / Column 4 → 6 (Full House)
  24. Row 4 / Column 7 → 8 (Naked Single)
  25. Row 3 / Column 7 → 6 (Hidden Single)
  26. Empty Rectangle: 3 in b2 (r9c34) => r2c3<>3
  27. W-Wing: 3/5 in r2c5,r4c6 connected by 5 in r8c56 => r4c5<>3
  28. W-Wing: 3/2 in r8c1,r9c4 connected by 2 in r89c7 => r8c56,r9c3<>3
  29. Row 8 / Column 6 → 5 (Naked Single)
  30. Row 4 / Column 6 → 3 (Naked Single)
  31. Row 8 / Column 5 → 1 (Naked Single)
  32. Row 4 / Column 5 → 5 (Naked Single)
  33. Row 2 / Column 5 → 3 (Full House)
  34. Row 7 / Column 6 → 2 (Naked Single)
  35. Row 6 / Column 6 → 1 (Full House)
  36. Row 9 / Column 4 → 3 (Full House)
  37. Row 4 / Column 4 → 4 (Naked Single)
  38. Row 4 / Column 8 → 1 (Full House)
  39. Row 6 / Column 8 → 4 (Full House)
  40. Row 6 / Column 4 → 2 (Full House)
  41. Row 7 / Column 1 → 8 (Naked Single)
  42. Row 7 / Column 2 → 5 (Naked Single)
  43. Row 7 / Column 3 → 1 (Full House)
  44. Row 3 / Column 2 → 8 (Naked Single)
  45. Row 9 / Column 3 → 2 (Naked Single)
  46. Row 2 / Column 3 → 5 (Naked Single)
  47. Row 1 / Column 3 → 3 (Full House)
  48. Row 8 / Column 1 → 3 (Naked Single)
  49. Row 2 / Column 4 → 8 (Naked Single)
  50. Row 1 / Column 1 → 4 (Naked Single)
  51. Row 2 / Column 1 → 2 (Full House)
  52. Row 2 / Column 9 → 4 (Full House)
  53. Row 1 / Column 7 → 1 (Naked Single)
  54. Row 8 / Column 9 → 7 (Naked Single)
  55. Row 1 / Column 4 → 5 (Naked Single)
  56. Row 1 / Column 9 → 8 (Full House)
  57. Row 3 / Column 9 → 5 (Full House)
  58. Row 9 / Column 9 → 1 (Full House)
  59. Row 3 / Column 4 → 1 (Full House)
  60. Row 9 / Column 7 → 4 (Naked Single)
  61. Row 8 / Column 7 → 2 (Full House)
  62. Row 8 / Column 2 → 4 (Full House)
  63. Row 9 / Column 2 → 7 (Full House)
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