PlaySudoku.us
Easy · Puzzle #681
3
4
2
8
7
5
9
1
5
4
6
9
2
7
2
5
4
6
1
4
5
7
8
7
8
4
1
6
6
1
8
3
2
4
3
1
7
9
1
3
9
2
6
5
9
2
8
3
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.