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

This Sudoku Puzzle has 25 steps and it is solved using Full House, Naked Single techniques.

Naked Single Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 4 / Column 4 → 4 (Full House)
  2. Row 5 / Column 9 → 4 (Full House)
  3. Row 9 / Column 7 → 4 (Full House)
  4. Row 2 / Column 5 → 2 (Naked Single)
  5. Row 3 / Column 1 → 9 (Naked Single)
  6. Row 3 / Column 2 → 5 (Full House)
  7. Row 6 / Column 3 → 9 (Naked Single)
  8. Row 6 / Column 1 → 1 (Full House)
  9. Row 9 / Column 3 → 5 (Full House)
  10. Row 7 / Column 2 → 5 (Naked Single)
  11. Row 5 / Column 1 → 1 (Naked Single)
  12. Row 5 / Column 2 → 8 (Naked Single)
  13. Row 1 / Column 4 → 1 (Naked Single)
  14. Row 1 / Column 6 → 5 (Full House)
  15. Row 1 / Column 2 → 2 (Full House)
  16. Row 8 / Column 6 → 1 (Full House)
  17. Row 9 / Column 5 → 5 (Full House)
  18. Row 8 / Column 5 → 5 (Full House)
  19. Row 2 / Column 1 → 4 (Naked Single)
  20. Row 2 / Column 2 → 6 (Full House)
  21. Row 9 / Column 8 → 9 (Naked Single)
  22. Row 7 / Column 8 → 1 (Naked Single)
  23. Row 8 / Column 8 → 9 (Full House)
  24. Row 8 / Column 4 → 2 (Naked Single)
  25. Row 8 / Column 2 → 9 (Naked Single)
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