PlaySudoku.us
Hard · Puzzle #240
1
8
4
6
9
1
6
5
4
3
2
8
4
1
5
1
3
6
8
7
3
8
6
3
2
1
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.