PlaySudoku.us
Hard · Puzzle #204
9
8
6
3
5
5
8
1
4
5
2
4
7
1
9
6
5
8
4
2
4
7
1
3
3
5
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.