[Event "URS-ch11 Semifinal"]
[Site "Leningrad"]
[Date "1938.05.27"]
[Round "7"]
[White "Mazel, Isaak"]
[Black "Botvinnik, Mikhail"]
[Result "0-1"]

1. c4 Nf6 2. Nc3 e6 3. e4 c5 4. f4 Nc6 5. Nf3 d5 6. e5 Ng4 7. cxd5 exd5 8. Qb3 Nb4 9. a3
c4 10. Qa4+ Bd7 11. Qd1 Qb6 0-1