PlaySudoku.us
Easy · Puzzle #711
3
7
8
9
1
9
4
5
2
3
4
2
6
1
2
9
5
4
3
8
4
3
6
2
3
4
8
5
1
3
1
6
7
4
8
7
8
5
6
8
4
7
1
3
9
Euler's "problème des 36 officiers" — an unsolvable 6×6 Latin square — is a direct mathematical precursor to Sudoku.
Euler's "problème des 36 officiers" — an unsolvable 6×6 Latin square — is a direct mathematical precursor to Sudoku.
"Chess demands total concentration." — Bobby Fischer
"Chess demands total concentration." — Bobby Fischer