PlaySudoku.us
Hard · Puzzle #977
7
9
3
1
2
7
4
1
2
3
2
9
5
8
6
7
5
9
1
6
1
5
1
2
7
9
5
2
"It is not the size of a man but the size of his heart that matters." — Evander Holyfield
"It is not the size of a man but the size of his heart that matters." — Evander Holyfield
The minimum number of clues (17) needed for a unique Sudoku was proved by exhaustive computer search in 2012.
The minimum number of clues (17) needed for a unique Sudoku was proved by exhaustive computer search in 2012.