PlaySudoku.us
Expert · Puzzle #595
3
9
1
7
9
3
5
1
5
1
4
9
6
3
4
4
6
9
3
2
1
6
5
3
1
8
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