PlaySudoku.us
Expert · Puzzle #859
4
5
5
9
1
4
2
8
1
6
5
4
1
3
9
2
2
8
4
9
6
3
6
5
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.
"You don't play against opponents. You play against the game of basketball." — Bobby Knight
"You don't play against opponents. You play against the game of basketball." — Bobby Knight