PlaySudoku.us
Evil · Puzzle #71
2
9
8
1
2
6
4
5
1
3
8
5
4
7
4
7
6
3
2
6
5
3
2
8
1
"Anyone who stops learning is old, whether at twenty or eighty." — Henry Ford
"Anyone who stops learning is old, whether at twenty or eighty." — Henry Ford
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.