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

This Sudoku Puzzle has 31 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 5 / Column 4 → 7 (Full House)
  2. Row 6 / Column 1 → 9 (Naked Single)
  3. Row 4 / Column 3 → 7 (Full House)
  4. Row 3 / Column 7 → 9 (Naked Single)
  5. Row 9 / Column 3 → 9 (Naked Single)
  6. Row 7 / Column 3 → 6 (Full House)
  7. Row 4 / Column 4 → 8 (Naked Single)
  8. Row 7 / Column 7 → 8 (Naked Single)
  9. Row 4 / Column 6 → 2 (Naked Single)
  10. Row 4 / Column 5 → 9 (Full House)
  11. Row 7 / Column 4 → 4 (Naked Single)
  12. Row 6 / Column 4 → 5 (Full House)
  13. Row 6 / Column 6 → 4 (Full House)
  14. Row 9 / Column 7 → 3 (Naked Single)
  15. Row 1 / Column 7 → 6 (Full House)
  16. Row 7 / Column 1 → 5 (Naked Single)
  17. Row 9 / Column 1 → 4 (Full House)
  18. Row 7 / Column 6 → 7 (Naked Single)
  19. Row 9 / Column 5 → 8 (Naked Single)
  20. Row 9 / Column 9 → 5 (Full House)
  21. Row 7 / Column 5 → 2 (Full House)
  22. Row 7 / Column 8 → 1 (Naked Single)
  23. Row 7 / Column 9 → 9 (Full House)
  24. Row 3 / Column 6 → 5 (Naked Single)
  25. Row 1 / Column 6 → 8 (Full House)
  26. Row 1 / Column 5 → 4 (Naked Single)
  27. Row 3 / Column 5 → 7 (Full House)
  28. Row 1 / Column 9 → 3 (Naked Single)
  29. Row 3 / Column 9 → 1 (Full House)
  30. Row 3 / Column 8 → 4 (Full House)
  31. Row 1 / Column 8 → 5 (Full House)
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