PlaySudoku.us
Medium · Puzzle #997
1
5
4
6
3
1
8
5
6
2
4
1
3
7
6
8
4
7
2
9
1
6
6
7
4
1
5
3
6
7
9
3
"The measure of intelligence is the ability to change." — Albert Einstein
"The measure of intelligence is the ability to change." — Albert Einstein
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.