PlaySudoku.us
Medium · Puzzle #490
5
8
7
1
2
5
4
2
3
1
6
5
4
2
4
6
3
2
8
8
1
9
4
6
3
6
8
2
1
5
8
4
3
8
4
2
6
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.