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

This Sudoku Puzzle has 10 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Give Up techniques.

Hidden Single Explanation
Locked Candidates Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 2 / Column 4 → 6 (Hidden Single)
  2. Row 5 / Column 2 → 4 (Hidden Single)
  3. Row 5 / Column 8 → 2 (Hidden Single)
  4. Row 5 / Column 5 → 6 (Hidden Single)
  5. Row 2 / Column 8 → 4 (Hidden Single)
  6. Row 6 / Column 5 → 5 (Hidden Single)
  7. Row 1 / Column 8 → 5 (Hidden Single)
  8. Row 2 / Column 2 → 5 (Hidden Single)
  9. Locked Candidates Type 1 (Pointing): 9 in b5 => r78c4<>9
  10. Give Up: Don't know how to proceed!
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