PlaySudoku.us
Hard · Puzzle #780
9
4
8
2
5
1
6
1
3
4
9
6
5
4
6
2
9
3
9
3
2
5
7
3
2
4
1
2
1
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.