PlaySudoku.us
Hard · Puzzle #105
7
4
6
7
1
3
5
4
1
3
9
2
7
8
9
4
5
4
3
9
4
3
7
3
5
6
8
1
8
2
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.