PlaySudoku.us
Hard · Puzzle #123
5
3
4
1
7
6
5
2
2
4
3
9
6
7
6
3
6
7
5
2
2
8
9
4
3
8
4
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.