PlaySudoku.us
Hard · Puzzle #546
7
9
3
6
5
2
2
7
5
9
5
9
3
1
9
1
2
5
7
7
1
9
4
6
9
8
2
8
4
7
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.