PlaySudoku.us
Hard · Puzzle #429
2
7
3
1
3
7
8
4
8
6
9
6
2
3
4
5
1
1
4
2
4
6
6
1
3
9
3
8
4
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.