PlaySudoku.us
Expert · Puzzle #520
1
6
8
7
3
9
4
4
3
8
9
2
1
8
6
4
9
5
6
3
4
1
7
6
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.