[Event "Mar del Plata International-24"]
[Site "Mar del Plata"]
[Date "1961.03.13"]
[Round "2"]
[White "Perez Perez, Francisco Jose"]
[Black "Najdorf, Miguel"]
[Result "0-1"]

1. b4 f5 2. Bb2 Nf6 3. c4 e6 4. a3 Be7 5. Nf3 O-O 6. g3 d5 7. Bg2 a5 8. b5 Nbd7 9. Qc2 Nc5
10. O-O c6 11. bxc6 bxc6 12. d4 Nce4 13. Ne5 Qe8 14. f3 Nd6 15. Nd2 Nf7 16. Nd3 Nd6 17.
Rae1 Ba6 18. c5 Nc4 19. Nxc4 Bxc4 20. Ne5 Ba6 21. Rf2 f4 22. gxf4 Nh5 23. e3 Bh4 24. Bc3
a4 25. Rb1 Bxf2+ 26. Qxf2 Nf6 27. Qg3 Bb5 28. Bf1 Bxf1 29. Rb7 Nh5 30. Qg5 0-1