PlaySudoku.us
Medium · Puzzle #356
7
4
8
5
9
1
9
1
4
7
5
6
2
9
7
4
7
5
8
4
1
3
2
6
9
2
1
3
5
8
4
"In the confrontation between the stream and the rock, the stream always wins — not through strength, but through persistence." — Buddha
"In the confrontation between the stream and the rock, the stream always wins — not through strength, but through persistence." — Buddha
Group theory classifies Sudoku symmetries: the automorphism group of the 9×9 Sudoku grid has order 1,218,998,108,160.
Group theory classifies Sudoku symmetries: the automorphism group of the 9×9 Sudoku grid has order 1,218,998,108,160.