PlaySudoku.us
Medium · Puzzle #454
5
8
4
7
1
9
3
4
9
2
3
6
7
1
5
9
2
8
7
3
1
4
4
1
7
5
8
3
9
3
4
9
9
6
7
2
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.