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

This Sudoku Puzzle has 12 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 2 / Column 4 → 7 (Full House)
  2. Row 2 / Column 6 → 7 (Full House)
  3. Row 7 / Column 5 → 1 (Naked Single)
  4. Row 9 / Column 5 → 3 (Full House)
  5. Row 9 / Column 8 → 9 (Naked Single)
  6. Row 7 / Column 8 → 4 (Full House)
  7. Row 5 / Column 6 → 9 (Naked Single)
  8. Row 5 / Column 4 → 3 (Full House)
  9. Row 6 / Column 6 → 1 (Naked Single)
  10. Row 6 / Column 5 → 7 (Full House)
  11. Row 3 / Column 5 → 3 (Full House)
  12. Row 3 / Column 4 → 1 (Naked Single)
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