PlaySudoku.us
Medium · Puzzle #869
4
3
8
1
7
8
5
1
2
1
6
2
3
1
4
7
6
4
8
3
1
7
2
5
9
6
5
1
8
4
7
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.