PlaySudoku.us
Medium · Puzzle #139
1
4
5
7
6
8
9
2
6
1
6
3
7
7
5
3
8
4
2
1
4
2
7
9
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9
7
9
1
2
6
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.