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

This Sudoku Puzzle has 42 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing) techniques.

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

Solution Steps:

  1. Row 6 / Column 5 → 3 (Naked Single)
  2. Row 1 / Column 1 → 6 (Hidden Single)
  3. Row 2 / Column 1 → 2 (Full House)
  4. Row 2 / Column 5 → 8 (Naked Single)
  5. Row 2 / Column 7 → 3 (Full House)
  6. Row 2 / Column 9 → 3 (Full House)
  7. Row 1 / Column 4 → 3 (Naked Single)
  8. Row 1 / Column 6 → 2 (Full House)
  9. Row 1 / Column 9 → 8 (Full House)
  10. Row 4 / Column 6 → 6 (Hidden Single)
  11. Row 7 / Column 5 → 2 (Hidden Single)
  12. Locked Candidates Type 1 (Pointing): 3 in b6 => r789c8<>3
  13. Row 8 / Column 8 → 5 (Naked Single)
  14. Row 7 / Column 8 → 8 (Naked Single)
  15. Row 8 / Column 5 → 9 (Naked Single)
  16. Row 4 / Column 5 → 5 (Full House)
  17. Row 4 / Column 8 → 3 (Naked Single)
  18. Row 9 / Column 8 → 2 (Full House)
  19. Row 5 / Column 8 → 2 (Full House)
  20. Row 7 / Column 4 → 5 (Naked Single)
  21. Row 9 / Column 7 → 4 (Naked Single)
  22. Row 7 / Column 6 → 3 (Naked Single)
  23. Row 7 / Column 3 → 9 (Full House)
  24. Row 8 / Column 3 → 3 (Full House)
  25. Row 8 / Column 7 → 7 (Full House)
  26. Row 8 / Column 9 → 7 (Full House)
  27. Row 9 / Column 4 → 8 (Naked Single)
  28. Row 9 / Column 6 → 3 (Full House)
  29. Row 9 / Column 9 → 9 (Naked Single)
  30. Row 6 / Column 7 → 1 (Naked Single)
  31. Row 6 / Column 1 → 7 (Full House)
  32. Row 4 / Column 9 → 4 (Naked Single)
  33. Row 5 / Column 9 → 4 (Naked Single)
  34. Row 4 / Column 4 → 7 (Full House)
  35. Row 5 / Column 4 → 7 (Full House)
  36. Row 4 / Column 7 → 8 (Naked Single)
  37. Row 5 / Column 7 → 5 (Full House)
  38. Row 4 / Column 1 → 1 (Naked Single)
  39. Row 5 / Column 1 → 3 (Full House)
  40. Row 4 / Column 2 → 9 (Full House)
  41. Row 5 / Column 2 → 8 (Full House)
  42. Row 5 / Column 6 → 9 (Naked Single)
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