PlaySudoku.us
Expert · Puzzle #266
9
6
2
3
7
2
5
2
8
4
6
1
1
3
8
4
3
2
7
9
3
7
5
4
4
8
"The infinite! No other question has ever moved so profoundly the spirit of man." — David Hilbert
"The infinite! No other question has ever moved so profoundly the spirit of man." — David Hilbert
Latin squares, the mathematical structure behind Sudoku, were studied by Leonhard Euler in the 18th century.
Latin squares, the mathematical structure behind Sudoku, were studied by Leonhard Euler in the 18th century.