PlaySudoku.us
Medium · Puzzle #256
8
4
1
5
4
7
3
6
8
1
2
4
6
2
1
8
4
8
9
3
4
5
4
6
2
7
4
5
9
4
8
6
3
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.
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.