PlaySudoku.us
Hard · Puzzle #50
5
6
4
6
3
1
7
4
5
6
3
2
9
1
1
4
5
8
3
6
7
4
3
2
6
1
9
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.