PlaySudoku.us
Medium · Puzzle #517
1
8
6
1
9
6
7
5
2
3
5
3
8
7
2
1
3
7
1
4
8
2
2
5
6
6
9
7
1
2
4
1
7
2
9
8
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.