PlaySudoku.us
Medium · Puzzle #616
3
1
7
6
1
9
2
5
5
2
4
1
4
2
9
2
1
9
8
4
6
1
5
2
7
4
2
5
7
6
6
1
9
2
4
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.
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.