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

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

Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 3 → 8 (Naked Single)
  2. Row 7 / Column 1 → 6 (Hidden Single)
  3. Row 9 / Column 6 → 4 (Hidden Single)
  4. Row 4 / Column 6 → 1 (Hidden Single)
  5. Row 2 / Column 2 → 1 (Hidden Single)
  6. Row 5 / Column 1 → 1 (Hidden Single)
  7. Row 2 / Column 6 → 6 (Hidden Single)
  8. Row 1 / Column 7 → 6 (Hidden Single)
  9. Row 5 / Column 7 → 3 (Naked Single)
  10. Row 5 / Column 9 → 4 (Naked Single)
  11. Row 5 / Column 4 → 5 (Naked Single)
  12. Row 5 / Column 5 → 6 (Full House)
  13. Row 4 / Column 8 → 6 (Hidden Single)
  14. Row 1 / Column 3 → 4 (Hidden Single)
  15. Row 3 / Column 8 → 4 (Hidden Single)
  16. Row 6 / Column 4 → 4 (Hidden Single)
  17. Row 3 / Column 9 → 3 (Hidden Single)
  18. Row 3 / Column 1 → 5 (Hidden Single)
  19. Row 2 / Column 8 → 5 (Hidden Single)
  20. Row 8 / Column 2 → 5 (Hidden Single)
  21. Locked Candidates Type 1 (Pointing): 8 in b1 => r1c5<>8
  22. Naked Triple: 2,7,8 in r78c4,r8c6 => r79c5<>2, r79c5<>7, r79c5<>8
  23. Locked Candidates Type 1 (Pointing): 7 in b8 => r2c4<>7
  24. Row 2 / Column 4 → 9 (Naked Single)
  25. Row 2 / Column 1 → 7 (Full House)
  26. Row 6 / Column 6 → 9 (Hidden Single)
  27. Row 6 / Column 1 → 3 (Naked Single)
  28. Row 6 / Column 2 → 7 (Naked Single)
  29. Row 4 / Column 2 → 9 (Full House)
  30. Row 1 / Column 2 → 8 (Naked Single)
  31. Row 9 / Column 2 → 3 (Full House)
  32. Row 4 / Column 5 → 3 (Hidden Single)
  33. Row 8 / Column 8 → 3 (Hidden Single)
  34. Row 8 / Column 4 → 7 (Hidden Single)
  35. Locked Candidates Type 2 (Claiming): 7 in c8 => r7c79,r9c79<>7
  36. Remote Pair: 2/8 r6c8 -8- r6c5 -2- r4c4 -8- r7c4 => r7c8<>2, r7c8<>8
  37. Row 7 / Column 8 → 7 (Naked Single)
  38. Row 9 / Column 3 → 7 (Hidden Single)
  39. X-Wing: 8 r47 c49 => r9c9<>8
  40. Skyscraper: 2 in r1c5,r8c6 (connected by r18c1) => r3c6<>2
  41. Row 3 / Column 6 → 8 (Naked Single)
  42. Row 8 / Column 6 → 2 (Full House)
  43. Row 8 / Column 1 → 8 (Full House)
  44. Row 7 / Column 4 → 8 (Naked Single)
  45. Row 4 / Column 4 → 2 (Full House)
  46. Row 6 / Column 5 → 8 (Full House)
  47. Row 6 / Column 8 → 2 (Full House)
  48. Row 9 / Column 8 → 8 (Full House)
  49. Row 4 / Column 7 → 7 (Naked Single)
  50. Row 4 / Column 9 → 8 (Full House)
  51. Row 3 / Column 7 → 9 (Naked Single)
  52. Row 1 / Column 9 → 7 (Full House)
  53. Row 3 / Column 3 → 2 (Naked Single)
  54. Row 1 / Column 1 → 9 (Full House)
  55. Row 1 / Column 5 → 2 (Full House)
  56. Row 3 / Column 5 → 7 (Full House)
  57. Row 7 / Column 3 → 9 (Full House)
  58. Row 9 / Column 1 → 2 (Full House)
  59. Row 7 / Column 9 → 5 (Naked Single)
  60. Row 9 / Column 9 → 9 (Full House)
  61. Row 9 / Column 7 → 1 (Naked Single)
  62. Row 7 / Column 7 → 2 (Full House)
  63. Row 7 / Column 5 → 1 (Full House)
  64. Row 9 / Column 5 → 5 (Full House)
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