PlaySudoku.us
Expert · Puzzle #542
5
8
1
9
4
2
7
3
8
2
4
5
2
9
5
1
7
2
6
4
8
9
1
4
5
"The more constraints one imposes, the more one frees oneself. And the arbitrariness of the constraint serves only to obtain precision of execution." — Igor Stravinsky
"The more constraints one imposes, the more one frees oneself. And the arbitrariness of the constraint serves only to obtain precision of execution." — Igor Stravinsky
The number of essentially different Sudoku grids (accounting for symmetry) is 5,472,730,538 — about 5.5 billion.
The number of essentially different Sudoku grids (accounting for symmetry) is 5,472,730,538 — about 5.5 billion.