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

This Sudoku Puzzle has 58 steps and it is solved using Naked Single, Hidden Single, Full House, Naked Triple, Remote Pair, Locked Pair techniques.

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

Solution Steps:

  1. Row 7 / Column 9 → 3 (Naked Single)
  2. Row 2 / Column 4 → 7 (Hidden Single)
  3. Row 2 / Column 5 → 3 (Hidden Single)
  4. Row 9 / Column 6 → 3 (Hidden Single)
  5. Row 8 / Column 4 → 6 (Hidden Single)
  6. Row 3 / Column 5 → 6 (Hidden Single)
  7. Row 3 / Column 8 → 4 (Naked Single)
  8. Row 3 / Column 9 → 1 (Naked Single)
  9. Row 8 / Column 6 → 4 (Hidden Single)
  10. Row 7 / Column 2 → 6 (Hidden Single)
  11. Row 8 / Column 5 → 1 (Hidden Single)
  12. Row 9 / Column 7 → 4 (Hidden Single)
  13. Row 7 / Column 1 → 7 (Hidden Single)
  14. Row 3 / Column 1 → 5 (Naked Single)
  15. Row 3 / Column 3 → 7 (Full House)
  16. Naked Triple: 1,2,5 in r268c2 => r45c2<>2, r45c2<>5, r5c2<>1
  17. Remote Pair: 9/5 r1c4 -5- r9c4 -9- r7c5 -5- r7c7 => r1c7<>9
  18. Locked Pair: 2,8 in r1c79 => r1c3,r2c78<>2, r1c3,r2c78<>8
  19. Row 1 / Column 3 → 1 (Naked Single)
  20. Row 2 / Column 2 → 2 (Naked Single)
  21. Row 2 / Column 3 → 8 (Full House)
  22. Row 8 / Column 2 → 5 (Naked Single)
  23. Row 6 / Column 2 → 1 (Naked Single)
  24. Row 6 / Column 1 → 2 (Naked Single)
  25. Row 5 / Column 1 → 9 (Naked Single)
  26. Row 9 / Column 1 → 1 (Full House)
  27. Row 5 / Column 6 → 5 (Naked Single)
  28. Row 1 / Column 6 → 9 (Naked Single)
  29. Row 2 / Column 6 → 1 (Full House)
  30. Row 1 / Column 4 → 5 (Full House)
  31. Row 9 / Column 4 → 9 (Full House)
  32. Row 7 / Column 5 → 5 (Full House)
  33. Row 7 / Column 7 → 9 (Full House)
  34. Row 5 / Column 3 → 6 (Naked Single)
  35. Row 6 / Column 5 → 8 (Naked Single)
  36. Row 9 / Column 3 → 2 (Naked Single)
  37. Row 8 / Column 3 → 9 (Full House)
  38. Row 9 / Column 8 → 5 (Full House)
  39. Row 2 / Column 7 → 6 (Naked Single)
  40. Row 2 / Column 8 → 9 (Full House)
  41. Row 5 / Column 5 → 2 (Naked Single)
  42. Row 4 / Column 5 → 9 (Full House)
  43. Row 6 / Column 7 → 5 (Naked Single)
  44. Row 5 / Column 8 → 8 (Naked Single)
  45. Row 6 / Column 3 → 3 (Naked Single)
  46. Row 4 / Column 3 → 5 (Full House)
  47. Row 6 / Column 8 → 6 (Full House)
  48. Row 5 / Column 9 → 4 (Naked Single)
  49. Row 8 / Column 8 → 2 (Naked Single)
  50. Row 4 / Column 8 → 3 (Full House)
  51. Row 8 / Column 7 → 8 (Full House)
  52. Row 4 / Column 9 → 2 (Naked Single)
  53. Row 1 / Column 9 → 8 (Full House)
  54. Row 1 / Column 7 → 2 (Full House)
  55. Row 5 / Column 2 → 7 (Naked Single)
  56. Row 4 / Column 2 → 4 (Full House)
  57. Row 4 / Column 7 → 7 (Full House)
  58. Row 5 / Column 7 → 1 (Full House)
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