PlaySudoku.us
Evil · Puzzle #673
7
6
4
3
8
1
7
3
2
8
7
6
4
1
6
5
1
5
9
4
9
8
7
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