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

This Sudoku Puzzle has 56 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 4 → 2 (Naked Single)
  2. Row 5 / Column 6 → 1 (Naked Single)
  3. Row 5 / Column 1 → 6 (Naked Single)
  4. Row 5 / Column 9 → 5 (Full House)
  5. Row 6 / Column 5 → 4 (Naked Single)
  6. Row 4 / Column 5 → 9 (Full House)
  7. Row 6 / Column 2 → 2 (Naked Single)
  8. Row 4 / Column 2 → 4 (Naked Single)
  9. Row 4 / Column 1 → 1 (Full House)
  10. Row 4 / Column 8 → 2 (Full House)
  11. Row 6 / Column 8 → 1 (Naked Single)
  12. Row 6 / Column 9 → 7 (Full House)
  13. Row 1 / Column 5 → 5 (Hidden Single)
  14. Row 7 / Column 9 → 3 (Hidden Single)
  15. Row 1 / Column 8 → 3 (Hidden Single)
  16. Row 8 / Column 1 → 5 (Hidden Single)
  17. Row 9 / Column 7 → 5 (Hidden Single)
  18. Row 3 / Column 5 → 3 (Hidden Single)
  19. Row 2 / Column 2 → 3 (Hidden Single)
  20. Locked Candidates Type 1 (Pointing): 9 in b3 => r89c9<>9
  21. Locked Candidates Type 2 (Claiming): 4 in r8 => r7c7,r9c9<>4
  22. Naked Triple: 2,4,6 in r8c579 => r8c6<>2, r8c6<>6
  23. X-Wing: 6 r27 c35 => r19c3,r89c5<>6
  24. Row 8 / Column 5 → 2 (Naked Single)
  25. Row 8 / Column 7 → 4 (Naked Single)
  26. Row 3 / Column 7 → 7 (Naked Single)
  27. Row 8 / Column 9 → 6 (Naked Single)
  28. Row 1 / Column 7 → 1 (Naked Single)
  29. Row 7 / Column 7 → 2 (Full House)
  30. Row 9 / Column 9 → 1 (Naked Single)
  31. Row 2 / Column 9 → 9 (Naked Single)
  32. Row 3 / Column 9 → 4 (Full House)
  33. Row 9 / Column 5 → 7 (Naked Single)
  34. Row 2 / Column 4 → 7 (Naked Single)
  35. Row 2 / Column 5 → 6 (Naked Single)
  36. Row 7 / Column 5 → 1 (Full House)
  37. Row 2 / Column 1 → 2 (Naked Single)
  38. Row 2 / Column 3 → 1 (Full House)
  39. Row 3 / Column 1 → 9 (Naked Single)
  40. Row 3 / Column 3 → 8 (Naked Single)
  41. Row 3 / Column 6 → 2 (Full House)
  42. Row 1 / Column 2 → 6 (Naked Single)
  43. Row 9 / Column 2 → 9 (Full House)
  44. Row 7 / Column 1 → 4 (Naked Single)
  45. Row 1 / Column 1 → 7 (Full House)
  46. Row 1 / Column 3 → 4 (Full House)
  47. Row 9 / Column 8 → 8 (Naked Single)
  48. Row 8 / Column 8 → 9 (Full House)
  49. Row 8 / Column 6 → 8 (Full House)
  50. Row 7 / Column 3 → 6 (Naked Single)
  51. Row 7 / Column 4 → 9 (Full House)
  52. Row 9 / Column 3 → 2 (Full House)
  53. Row 9 / Column 4 → 4 (Naked Single)
  54. Row 9 / Column 6 → 6 (Full House)
  55. Row 1 / Column 6 → 9 (Full House)
  56. Row 1 / Column 4 → 8 (Full House)
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