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

This Sudoku Puzzle has 13 steps and it is solved using Naked Single, Hidden Single, Locked Pair, Locked Candidates Type 2 (Claiming), Hidden Pair, Hidden Rectangle, Give Up techniques.

Naked Single Explanation
Hidden Single Explanation
Hidden Pair Explanation
Locked Candidates Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 9 / Column 9 → 1 (Naked Single)
  2. Row 6 / Column 1 → 9 (Hidden Single)
  3. Row 6 / Column 8 → 5 (Hidden Single)
  4. Row 2 / Column 8 → 9 (Hidden Single)
  5. Row 8 / Column 8 → 8 (Hidden Single)
  6. Locked Pair: 6,8 in r56c3 => r4c3<>8, r5c2,r78c3<>6
  7. Row 4 / Column 3 → 4 (Naked Single)
  8. Locked Candidates Type 2 (Claiming): 3 in c9 => r7c78<>3
  9. Row 7 / Column 8 → 4 (Naked Single)
  10. Row 8 / Column 5 → 4 (Hidden Single)
  11. Hidden Pair: 5,8 in r24c6 => r2c6<>1, r2c6<>6, r4c6<>2
  12. Hidden Rectangle: 6/9 in r7c26,r9c26 => r7c2<>6
  13. Give Up: Don't know how to proceed!
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