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

This Sudoku Puzzle has 36 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Full House techniques.

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

Solution Steps:

  1. Row 7 / Column 8 → 5 (Hidden Single)
  2. Locked Candidates Type 1 (Pointing): 8 in b1 => r7c2<>8
  3. Row 7 / Column 2 → 2 (Naked Single)
  4. Row 3 / Column 2 → 8 (Naked Single)
  5. Row 3 / Column 1 → 2 (Hidden Single)
  6. Row 3 / Column 6 → 1 (Full House)
  7. Row 4 / Column 6 → 4 (Naked Single)
  8. Row 4 / Column 8 → 9 (Naked Single)
  9. Row 4 / Column 4 → 1 (Full House)
  10. Row 6 / Column 8 → 4 (Full House)
  11. Row 2 / Column 6 → 8 (Hidden Single)
  12. Row 6 / Column 6 → 5 (Naked Single)
  13. Row 1 / Column 6 → 2 (Full House)
  14. Row 1 / Column 4 → 5 (Full House)
  15. Row 6 / Column 5 → 8 (Naked Single)
  16. Row 6 / Column 4 → 9 (Full House)
  17. Row 8 / Column 5 → 5 (Full House)
  18. Row 1 / Column 3 → 1 (Naked Single)
  19. Row 8 / Column 3 → 8 (Naked Single)
  20. Row 9 / Column 3 → 5 (Full House)
  21. Row 8 / Column 4 → 2 (Naked Single)
  22. Row 9 / Column 1 → 9 (Naked Single)
  23. Row 8 / Column 1 → 1 (Full House)
  24. Row 8 / Column 9 → 9 (Full House)
  25. Row 2 / Column 1 → 5 (Full House)
  26. Row 9 / Column 7 → 4 (Naked Single)
  27. Row 2 / Column 9 → 6 (Naked Single)
  28. Row 1 / Column 7 → 9 (Naked Single)
  29. Row 2 / Column 7 → 1 (Full House)
  30. Row 1 / Column 9 → 4 (Full House)
  31. Row 2 / Column 2 → 9 (Full House)
  32. Row 1 / Column 2 → 6 (Full House)
  33. Row 7 / Column 9 → 8 (Naked Single)
  34. Row 7 / Column 4 → 4 (Full House)
  35. Row 9 / Column 4 → 8 (Full House)
  36. Row 9 / Column 9 → 2 (Full House)
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