PlaySudoku.us
Hard · Puzzle #186
9
1
9
8
7
8
6
9
5
4
1
6
6
4
9
6
7
1
4
8
3
7
7
5
4
8
3
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.