PlaySudoku.us
Hard · Puzzle #267
6
5
5
4
1
3
9
1
2
3
9
6
8
4
9
8
2
3
4
7
4
3
9
5
7
3
4
3
8
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.