PlaySudoku.us
Evil · Puzzle #952
4
4
1
5
2
7
8
2
3
9
5
4
7
1
6
7
1
2
8
7
9
1
2
3
4
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.
"The most powerful weapon in chess is to have the next move." — David Bronstein
"The most powerful weapon in chess is to have the next move." — David Bronstein