[Event "Leningrad"] [Site "Leningrad"] [Round "0"] [White "Mazel"] [Black "Botvinnik"] [Result "0-1"] [ECO "A19"] [Opening "English: Mikenas, Sicilian Variation"] 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 #R 0-1