PlaySudoku.us
Medium · Puzzle #210
8
4
7
1
4
2
5
8
9
3
6
1
1
8
2
7
3
6
3
7
5
8
9
4
7
8
3
6
6
1
5
8
1
4
3
8
6
Use pencil marks to track candidates. Eliminating one candidate often triggers a chain reaction.
Use pencil marks to track candidates. Eliminating one candidate often triggers a chain reaction.
Use pencil marks to track candidates. Eliminating one candidate often triggers a chain reaction.
Use pencil marks to track candidates. Eliminating one candidate often triggers a chain reaction.