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

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