PlaySudoku.us
Easy · Puzzle #162
6
9
1
4
7
8
1
6
4
9
4
5
7
8
9
6
1
3
5
8
7
9
4
8
6
1
9
7
5
3
1
5
2
6
7
1
6
3
9
2
4
3
7
5
1
6
3
6
5
4
2
"The roots of education are bitter, but the fruit is sweet." — Aristotle
"The roots of education are bitter, but the fruit is sweet." — Aristotle
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.