PlaySudoku.us
Hard · Puzzle #348
6
2
4
7
5
3
8
2
8
1
2
4
4
2
9
1
5
1
7
6
6
2
1
9
5
9
8
3
6
7
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.