PlaySudoku.us
Evil · Puzzle #789
2
5
4
6
1
4
9
3
5
2
3
6
6
3
7
5
4
3
9
8
7
4
1
5
8
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.
"Mathematics is the music of reason." — James Joseph Sylvester
"Mathematics is the music of reason." — James Joseph Sylvester