[Event "Mar del Plata International-29"]
[Site "Mar del Plata"]
[Date "1971.04.03"]
[Round "10"]
[White "Sumiacher, Carlos"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. Bg2 Bf5 5. Qb3 Qb6 6. cxd5 Qxb3 7. axb3 Nxd5 8. Nc3 Nb4 9.
Nd4 e5 10. Rxa7 Rxa7 11. Nxf5 Nc2+ 12. Kd1 Na1 13. d3 g6 14. Be3 Ra6 15. Nh4 Nxb3 16. Nf3
Bg7 17. Kc2 Nd4+ 18. Bxd4 exd4 19. Ne4 Nd7 20. h4 f5 21. Neg5 Ke7 22. Nd2 0-1