PlaySudoku.us
Medium · Puzzle #614
1
9
6
8
7
4
7
1
3
8
4
9
2
9
5
9
4
8
8
1
6
2
9
5
6
7
7
2
7
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.
"It is not enough to have a good mind; the main thing is to use it well." — René Descartes
"It is not enough to have a good mind; the main thing is to use it well." — René Descartes