PlaySudoku.us
Medium · Puzzle #571
4
5
3
7
5
9
1
3
4
7
3
8
4
9
2
8
4
1
7
6
5
2
4
3
6
8
4
1
5
2
7
8
4
6
9
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.