PlaySudoku.us
Medium · Puzzle #927
6
9
1
8
5
2
4
1
3
9
1
7
8
2
4
8
6
7
7
3
2
4
9
7
2
3
2
1
3
6
4
8
8
4
5
The pigeonhole principle explains why 8 clues are never enough to guarantee a unique Sudoku solution.
The pigeonhole principle explains why 8 clues are never enough to guarantee a unique Sudoku solution.
"Somewhere behind the athlete you've become and the hours of practice and the coaches who have pushed you is a little girl who fell in love with the game and never lost the joy of it." — Mia Hamm
"Somewhere behind the athlete you've become and the hours of practice and the coaches who have pushed you is a little girl who fell in love with the game and never lost the joy of it." — Mia Hamm