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

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