PlaySudoku.us
Medium · Puzzle #273
1
5
4
4
3
7
4
3
2
1
4
8
9
1
4
3
1
7
4
2
6
9
7
5
2
4
8
2
5
7
9
9
7
1
"Candidates must be mentally prepared for every new game as if it were the last." — Mikhail Botvinnik
"Candidates must be mentally prepared for every new game as if it were the last." — Mikhail Botvinnik
Check columns before rows — columns are often harder to complete and contain more useful constraints.
Check columns before rows — columns are often harder to complete and contain more useful constraints.