PlaySudoku.us
Medium · Puzzle #660
7
9
2
1
2
6
5
4
7
8
9
4
3
5
6
1
4
6
5
7
9
4
2
8
6
8
1
9
4
5
1
3
Complete a Medium puzzle using only box-based logic — no row or column scanning allowed.
Complete a Medium puzzle using only box-based logic — no row or column scanning allowed.
"Do not worry about your difficulties in mathematics. I can assure you mine are still greater." — Albert Einstein
"Do not worry about your difficulties in mathematics. I can assure you mine are still greater." — Albert Einstein