PlaySudoku.us
Hard · Puzzle #303
9
5
4
7
6
3
8
7
4
1
2
5
2
1
8
7
4
5
2
6
9
2
5
2
8
7
1
6
9
1
6
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.