PlaySudoku.us
Hard · Puzzle #222
9
8
6
7
5
2
8
3
4
4
6
5
1
3
5
7
6
4
5
2
7
9
7
6
4
3
7
5
5
8
7
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.