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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Locked Pair, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, undefined, Naked Single, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 1 / Column 1 → 4 (Hidden Single)
  2. Row 2 / Column 8 → 1 (Hidden Single)
  3. Row 5 / Column 3 → 8 (Hidden Single)
  4. Row 1 / Column 5 → 8 (Hidden Single)
  5. Row 9 / Column 2 → 8 (Hidden Single)
  6. Row 2 / Column 6 → 5 (Hidden Single)
  7. Row 4 / Column 6 → 1 (Hidden Single)
  8. Row 7 / Column 4 → 1 (Hidden Single)
  9. Row 9 / Column 9 → 1 (Hidden Single)
  10. Row 2 / Column 7 → 8 (Hidden Single)
  11. Row 5 / Column 8 → 4 (Hidden Single)
  12. Row 1 / Column 4 → 7 (Hidden Single)
  13. Row 8 / Column 8 → 8 (Hidden Single)
  14. Row 4 / Column 2 → 4 (Hidden Single)
  15. Row 5 / Column 1 → 1 (Hidden Single)
  16. Row 8 / Column 4 → 4 (Hidden Single)
  17. Row 7 / Column 3 → 4 (Hidden Single)
  18. Row 9 / Column 7 → 4 (Hidden Single)
  19. Row 6 / Column 4 → 2 (Hidden Single)
  20. Locked Pair: 6,7 in r9c13 => r8c13,r9c5<>6, r8c13,r9c58<>7
  21. Locked Candidates Type 1 (Pointing): 6 in b4 => r6c5<>6
  22. Locked Candidates Type 1 (Pointing): 5 in b7 => r8c79<>5
  23. Locked Candidates Type 2 (Claiming): 3 in r1 => r3c8<>3
  24. Naked Pair: 6,9 in r1c67 => r1c89<>9, r1c9<>6
  25. Locked Candidates Type 1 (Pointing): 6 in b3 => r8c7<>6
  26. W-Wing: 9/5 in r3c8,r5c9 connected by 5 in r7c89 => r6c8<>9
  27. XY-Wing: 5/7/9 in r37c8,r8c7 => r13c7,r9c8<>9
  28. Row 1 / Column 7 → 6 (Naked Single)
  29. Row 9 / Column 8 → 2 (Naked Single)
  30. Row 1 / Column 6 → 9 (Naked Single)
  31. Row 8 / Column 6 → 6 (Full House)
  32. Row 3 / Column 7 → 5 (Naked Single)
  33. Row 1 / Column 8 → 3 (Naked Single)
  34. Row 1 / Column 9 → 2 (Full House)
  35. Row 3 / Column 8 → 9 (Full House)
  36. Row 9 / Column 5 → 9 (Naked Single)
  37. Row 2 / Column 4 → 3 (Naked Single)
  38. Row 3 / Column 4 → 6 (Full House)
  39. Row 5 / Column 4 → 9 (Full House)
  40. Row 7 / Column 5 → 7 (Naked Single)
  41. Row 8 / Column 5 → 2 (Full House)
  42. Row 8 / Column 9 → 9 (Naked Single)
  43. Row 3 / Column 2 → 7 (Naked Single)
  44. Row 3 / Column 3 → 3 (Full House)
  45. Row 6 / Column 2 → 9 (Full House)
  46. Row 2 / Column 1 → 2 (Naked Single)
  47. Row 2 / Column 3 → 9 (Full House)
  48. Row 5 / Column 9 → 5 (Naked Single)
  49. Row 5 / Column 5 → 6 (Full House)
  50. Row 7 / Column 8 → 5 (Naked Single)
  51. Row 6 / Column 8 → 7 (Full House)
  52. Row 7 / Column 9 → 6 (Full House)
  53. Row 8 / Column 7 → 7 (Full House)
  54. Row 4 / Column 9 → 3 (Full House)
  55. Row 4 / Column 7 → 9 (Full House)
  56. Row 8 / Column 3 → 5 (Naked Single)
  57. Row 8 / Column 1 → 3 (Full House)
  58. Row 4 / Column 5 → 5 (Naked Single)
  59. Row 6 / Column 5 → 3 (Full House)
  60. Row 6 / Column 3 → 6 (Naked Single)
  61. Row 6 / Column 1 → 5 (Full House)
  62. Row 4 / Column 1 → 7 (Naked Single)
  63. Row 4 / Column 3 → 2 (Full House)
  64. Row 9 / Column 3 → 7 (Full House)
  65. Row 9 / Column 1 → 6 (Full House)
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