[Event "Mar del Plata International-24"]
[Site "Mar del Plata"]
[Date "1961.03.16"]
[Round "4"]
[White "Letelier Martner, Rene"]
[Black "Byrne, Robert Eugene"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nc3 g6 3. d4 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. Bf4 c6 8. e4 b5 9. Qd3 Qa5 10. Nd2 Nh5 11. Be3 f5 12. Nb3 Qd8 13. Be2 e5 14. Rd1 fxe4 15. Nxe4 Be6 16. Bxh5 gxh5 17. Ng5 Bf5 18. Qc3 exd4 19. Nxd4 Qd5 20. O-O Qxa2 21. Qc5 Nd7 22. Qd6 Ne5 23. Nge6 Bxe6 24. Nxe6 Rf6 25. Qxe5 Rxe6 26. Qxh5 Rg6 27. b4 1/2-1/2