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

This Sudoku Puzzle has 18 steps and it is solved using Full House, Naked Single, Hidden Single, Naked Triple, Give Up techniques.

Naked Single Explanation
Hidden Single Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 5 → 3 (Full House)
  2. Row 2 / Column 5 → 7 (Full House)
  3. Row 2 / Column 4 → 8 (Full House)
  4. Row 5 / Column 2 → 7 (Naked Single)
  5. Row 5 / Column 8 → 3 (Full House)
  6. Row 4 / Column 8 → 1 (Full House)
  7. Row 4 / Column 2 → 9 (Full House)
  8. Row 1 / Column 2 → 6 (Naked Single)
  9. Row 9 / Column 2 → 4 (Full House)
  10. Row 3 / Column 1 → 4 (Naked Single)
  11. Row 9 / Column 3 → 7 (Naked Single)
  12. Row 8 / Column 1 → 2 (Full House)
  13. Row 2 / Column 1 → 9 (Full House)
  14. Row 9 / Column 9 → 9 (Naked Single)
  15. Row 9 / Column 7 → 3 (Hidden Single)
  16. Row 8 / Column 4 → 3 (Hidden Single)
  17. Naked Triple: 4,7,8 in r78c9,r8c8 => r7c8<>4
  18. Give Up: Don't know how to proceed!
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