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

This Sudoku Puzzle has 59 steps and it is solved using Hidden Single, Naked Single, Full House, Naked Pair, undefined, Empty Rectangle techniques.

Naked Single Explanation
Hidden Single Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 1 / Column 5 → 2 (Hidden Single)
  2. Row 2 / Column 4 → 7 (Hidden Single)
  3. Row 8 / Column 2 → 3 (Hidden Single)
  4. Row 1 / Column 7 → 3 (Hidden Single)
  5. Row 3 / Column 4 → 3 (Hidden Single)
  6. Row 8 / Column 8 → 1 (Hidden Single)
  7. Row 7 / Column 9 → 8 (Naked Single)
  8. Row 7 / Column 8 → 5 (Naked Single)
  9. Row 7 / Column 7 → 2 (Naked Single)
  10. Row 8 / Column 6 → 2 (Hidden Single)
  11. Row 9 / Column 2 → 2 (Hidden Single)
  12. Row 1 / Column 8 → 7 (Hidden Single)
  13. Row 3 / Column 5 → 5 (Hidden Single)
  14. Row 8 / Column 5 → 6 (Naked Single)
  15. Row 8 / Column 4 → 5 (Full House)
  16. Row 2 / Column 5 → 9 (Naked Single)
  17. Row 2 / Column 6 → 6 (Full House)
  18. Row 6 / Column 4 → 9 (Naked Single)
  19. Row 4 / Column 4 → 6 (Full House)
  20. Row 7 / Column 5 → 3 (Naked Single)
  21. Row 9 / Column 5 → 8 (Naked Single)
  22. Row 7 / Column 6 → 9 (Full House)
  23. Row 6 / Column 7 → 7 (Hidden Single)
  24. Row 5 / Column 8 → 6 (Hidden Single)
  25. Row 5 / Column 6 → 3 (Hidden Single)
  26. Row 6 / Column 6 → 5 (Hidden Single)
  27. Row 4 / Column 6 → 8 (Full House)
  28. Row 4 / Column 8 → 9 (Hidden Single)
  29. Row 5 / Column 2 → 9 (Hidden Single)
  30. Naked Pair: 1,4 in r5c59 => r5c137<>1, r5c37<>4
  31. Row 3 / Column 3 → 4 (Hidden Single)
  32. X-Wing: 8 r35 c17 => r2c7<>8
  33. Empty Rectangle: 1 in b4 (r24c7) => r2c2<>1
  34. Row 2 / Column 2 → 8 (Naked Single)
  35. Row 2 / Column 8 → 4 (Naked Single)
  36. Row 2 / Column 7 → 1 (Full House)
  37. Row 6 / Column 8 → 8 (Full House)
  38. Row 5 / Column 7 → 5 (Naked Single)
  39. Row 4 / Column 7 → 4 (Naked Single)
  40. Row 5 / Column 9 → 1 (Full House)
  41. Row 5 / Column 3 → 7 (Naked Single)
  42. Row 4 / Column 2 → 1 (Naked Single)
  43. Row 4 / Column 1 → 5 (Full House)
  44. Row 6 / Column 2 → 4 (Full House)
  45. Row 5 / Column 1 → 8 (Full House)
  46. Row 5 / Column 5 → 4 (Full House)
  47. Row 6 / Column 5 → 1 (Full House)
  48. Row 9 / Column 7 → 6 (Naked Single)
  49. Row 3 / Column 7 → 8 (Full House)
  50. Row 9 / Column 9 → 4 (Full House)
  51. Row 7 / Column 3 → 1 (Naked Single)
  52. Row 7 / Column 1 → 7 (Full House)
  53. Row 9 / Column 1 → 9 (Naked Single)
  54. Row 9 / Column 3 → 5 (Full House)
  55. Row 1 / Column 3 → 9 (Full House)
  56. Row 3 / Column 1 → 6 (Naked Single)
  57. Row 1 / Column 1 → 1 (Full House)
  58. Row 1 / Column 9 → 6 (Full House)
  59. Row 3 / Column 9 → 9 (Full House)
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