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

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