PlaySudoku.us
Expert · Puzzle #36
5
1
4
7
3
8
4
7
6
4
6
9
1
6
7
7
3
9
8
5
3
4
5
1
9
Always update pencil marks immediately after placing a digit — stale marks cause almost all solving errors.
Always update pencil marks immediately after placing a digit — stale marks cause almost all solving errors.
"Our greatest glory is not in never falling, but in rising every time we fall." — Confucius
"Our greatest glory is not in never falling, but in rising every time we fall." — Confucius