PlaySudoku.us
Hard · Puzzle #861
5
9
6
7
8
2
3
8
1
5
2
6
3
2
7
4
3
9
8
1
9
3
7
8
9
5
6
2
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.