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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Pair, undefined, Full House, Swordfish techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 1 / Column 7 → 1 (Hidden Single)
  2. Row 4 / Column 4 → 2 (Hidden Single)
  3. Row 8 / Column 1 → 7 (Hidden Single)
  4. Row 4 / Column 6 → 7 (Hidden Single)
  5. Row 4 / Column 7 → 4 (Naked Single)
  6. Locked Candidates Type 1 (Pointing): 3 in b5 => r6c13<>3
  7. Locked Candidates Type 1 (Pointing): 9 in b6 => r78c9<>9
  8. Locked Candidates Type 2 (Claiming): 2 in r3 => r2c9<>2
  9. Locked Candidates Type 2 (Claiming): 3 in c3 => r7c1,r9c2<>3
  10. Naked Triple: 4,8,9 in r7c1,r89c2 => r7c3<>4, r79c3<>8, r79c3<>9
  11. Naked Triple: 2,6,8 in r7c79,r8c9 => r89c8,r9c7<>6
  12. Row 8 / Column 8 → 9 (Naked Single)
  13. Row 2 / Column 8 → 6 (Hidden Single)
  14. Row 2 / Column 9 → 5 (Naked Single)
  15. Row 3 / Column 6 → 6 (Hidden Single)
  16. Row 1 / Column 8 → 4 (Hidden Single)
  17. Row 1 / Column 6 → 5 (Naked Single)
  18. Row 1 / Column 4 → 7 (Hidden Single)
  19. Naked Pair: 8,9 in r14c3 => r36c3<>9
  20. X-Wing: 9 r37 c14 => r46c1,r9c4<>9
  21. Row 6 / Column 9 → 9 (Hidden Single)
  22. Row 4 / Column 9 → 1 (Naked Single)
  23. Row 4 / Column 1 → 8 (Naked Single)
  24. Row 4 / Column 3 → 9 (Full House)
  25. Row 5 / Column 9 → 7 (Naked Single)
  26. Row 1 / Column 3 → 8 (Naked Single)
  27. Row 3 / Column 9 → 2 (Naked Single)
  28. Row 3 / Column 7 → 7 (Full House)
  29. Row 5 / Column 8 → 5 (Naked Single)
  30. Row 6 / Column 7 → 6 (Full House)
  31. Row 9 / Column 8 → 7 (Full House)
  32. Row 9 / Column 7 → 5 (Naked Single)
  33. Row 7 / Column 7 → 2 (Full House)
  34. Swordfish: 4 r258 c125 => r367c1<>4
  35. Row 7 / Column 1 → 9 (Naked Single)
  36. Row 3 / Column 1 → 5 (Naked Single)
  37. Row 9 / Column 2 → 8 (Naked Single)
  38. Row 3 / Column 3 → 4 (Naked Single)
  39. Row 3 / Column 4 → 9 (Full House)
  40. Row 6 / Column 1 → 1 (Naked Single)
  41. Row 8 / Column 2 → 4 (Naked Single)
  42. Row 9 / Column 4 → 3 (Naked Single)
  43. Row 2 / Column 1 → 3 (Naked Single)
  44. Row 5 / Column 1 → 4 (Full House)
  45. Row 6 / Column 3 → 5 (Naked Single)
  46. Row 5 / Column 2 → 3 (Full House)
  47. Row 5 / Column 5 → 1 (Full House)
  48. Row 1 / Column 5 → 2 (Naked Single)
  49. Row 1 / Column 2 → 9 (Full House)
  50. Row 2 / Column 2 → 2 (Full House)
  51. Row 2 / Column 5 → 4 (Full House)
  52. Row 8 / Column 5 → 6 (Naked Single)
  53. Row 8 / Column 9 → 8 (Full House)
  54. Row 9 / Column 5 → 9 (Full House)
  55. Row 7 / Column 9 → 6 (Full House)
  56. Row 6 / Column 4 → 4 (Naked Single)
  57. Row 6 / Column 6 → 3 (Full House)
  58. Row 7 / Column 4 → 8 (Full House)
  59. Row 7 / Column 6 → 4 (Naked Single)
  60. Row 9 / Column 6 → 1 (Full House)
  61. Row 9 / Column 3 → 6 (Full House)
  62. Row 7 / Column 3 → 3 (Full House)
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