PlaySudoku.us
Medium · Puzzle #499
2
3
8
9
4
4
9
1
1
7
2
4
3
9
6
8
3
4
9
3
6
7
8
8
4
6
2
7
1
4
2
6
3
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.