PlaySudoku.us
Easy · Puzzle #840
1
4
7
9
7
2
8
9
3
6
4
4
1
6
5
8
9
6
5
1
4
7
4
6
2
1
1
3
4
8
9
4
3
9
1
2
9
4
3
7
7
2
1
8
5
4
"Science without religion is lame; religion without science is blind." — Albert Einstein
"Science without religion is lame; religion without science is blind." — 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.