PlaySudoku.us
Easy · Puzzle #663
3
6
2
8
9
4
5
8
9
5
4
3
7
2
5
1
6
8
6
2
7
9
5
1
4
8
1
3
5
7
9
9
8
1
3
8
3
4
2
5
3
7
9
5
7
8
6
3
2
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.