PlaySudoku.us
Medium · Puzzle #689
3
4
6
5
2
7
8
3
7
8
9
6
8
9
2
5
6
4
8
2
3
9
4
6
8
5
2
8
3
4
8
3
6
2
The minimum number of clues needed to create a valid Sudoku with a unique solution is 17.
The minimum number of clues needed to create a valid Sudoku with a unique solution is 17.
The minimum number of clues needed to create a valid Sudoku with a unique solution is 17.
The minimum number of clues needed to create a valid Sudoku with a unique solution is 17.