Medium
Daily challenge · 2026-09-11
Puzzle
3
8
5
4
7
5
1
8
2
5
6
4
1
7
3
5
2
7
1
8
5
3
2
4
9
6
7
8
2
1
7
Logic required
Singles
Hardest technique: Hidden Single
Solution
Solve the puzzle to reveal the solution.