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

This Sudoku Puzzle has 63 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), undefined, Empty Rectangle, Naked Single, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 8 → 5 (Hidden Single)
  2. Row 7 / Column 4 → 7 (Hidden Single)
  3. Row 8 / Column 1 → 4 (Hidden Single)
  4. Row 5 / Column 9 → 4 (Hidden Single)
  5. Row 6 / Column 8 → 6 (Hidden Single)
  6. Row 9 / Column 1 → 5 (Hidden Single)
  7. Row 5 / Column 2 → 7 (Hidden Single)
  8. Row 3 / Column 8 → 7 (Hidden Single)
  9. Row 2 / Column 1 → 7 (Hidden Single)
  10. Locked Candidates Type 1 (Pointing): 3 in b4 => r2c3<>3
  11. Locked Candidates Type 1 (Pointing): 1 in b5 => r278c5<>1
  12. Locked Candidates Type 1 (Pointing): 2 in b5 => r5c3<>2
  13. Locked Candidates Type 1 (Pointing): 8 in b6 => r789c7<>8
  14. X-Wing: 9 r39 c24 => r1c24,r27c2<>9
  15. Row 1 / Column 7 → 9 (Hidden Single)
  16. Row 4 / Column 9 → 9 (Hidden Single)
  17. Locked Candidates Type 1 (Pointing): 3 in b3 => r2c256<>3
  18. Row 6 / Column 5 → 3 (Hidden Single)
  19. Row 5 / Column 3 → 3 (Hidden Single)
  20. Row 4 / Column 5 → 1 (Hidden Single)
  21. Empty Rectangle: 6 in b7 (r28c5) => r2c2<>6
  22. Row 2 / Column 2 → 1 (Naked Single)
  23. Row 2 / Column 9 → 3 (Naked Single)
  24. Row 3 / Column 1 → 8 (Naked Single)
  25. Row 2 / Column 7 → 4 (Naked Single)
  26. Row 1 / Column 8 → 1 (Full House)
  27. Row 1 / Column 4 → 6 (Naked Single)
  28. Row 9 / Column 8 → 8 (Naked Single)
  29. Row 7 / Column 8 → 4 (Full House)
  30. Row 1 / Column 1 → 2 (Naked Single)
  31. Row 2 / Column 6 → 5 (Naked Single)
  32. Row 5 / Column 4 → 2 (Naked Single)
  33. Row 5 / Column 6 → 6 (Full House)
  34. Row 1 / Column 2 → 3 (Naked Single)
  35. Row 1 / Column 6 → 4 (Full House)
  36. Row 4 / Column 1 → 6 (Naked Single)
  37. Row 6 / Column 1 → 1 (Full House)
  38. Row 2 / Column 5 → 9 (Naked Single)
  39. Row 2 / Column 3 → 6 (Full House)
  40. Row 3 / Column 2 → 9 (Full House)
  41. Row 3 / Column 4 → 1 (Naked Single)
  42. Row 3 / Column 6 → 3 (Full House)
  43. Row 9 / Column 4 → 9 (Full House)
  44. Row 7 / Column 5 → 5 (Naked Single)
  45. Row 8 / Column 5 → 6 (Full House)
  46. Row 7 / Column 7 → 2 (Naked Single)
  47. Row 4 / Column 7 → 8 (Naked Single)
  48. Row 4 / Column 3 → 2 (Full House)
  49. Row 6 / Column 3 → 8 (Full House)
  50. Row 7 / Column 2 → 8 (Naked Single)
  51. Row 9 / Column 7 → 3 (Naked Single)
  52. Row 9 / Column 9 → 1 (Naked Single)
  53. Row 6 / Column 7 → 7 (Naked Single)
  54. Row 6 / Column 9 → 2 (Full House)
  55. Row 8 / Column 9 → 7 (Full House)
  56. Row 8 / Column 7 → 5 (Full House)
  57. Row 8 / Column 3 → 1 (Naked Single)
  58. Row 7 / Column 3 → 9 (Full House)
  59. Row 7 / Column 6 → 1 (Full House)
  60. Row 8 / Column 2 → 2 (Naked Single)
  61. Row 8 / Column 6 → 8 (Full House)
  62. Row 9 / Column 6 → 2 (Full House)
  63. Row 9 / Column 2 → 6 (Full House)
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