[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.08"]
[Round "13"]
[White "Helmers, Knut Jaran"]
[Black "Bronstein, Luis Marcos"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2400"]
1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 e5 7. Nxd5 Qxd5 8. d3 O-O 9. O-O Nc6 10. Qa4 Qd6 11. Be3 Nd4 12. Nxd4 exd4 13. Bf4 Qb6 14. Rfc1 c6 15. b4 Bg4 16. h3 Be6 17. Rab1 a6 18. Qa5 Qd8 19. Qxd8 Rfxd8 20. a4 Ba2 21. Rb2 Bd5 22. b5 cxb5 23. axb5 a5 24. Rc7 a4 25. Bxd5 Rxd5 26. Rxb7 a3 27. Ra2 Bf8 28. Bc7 Rd7 29. b6 Bc5 30. Rb8+ Rxb8 31. Bxb8 Rb7 32. Bc7 f5 33. Kf1 Kf7 34. f4 Ke6 35. Ke1 Kd5 36. Kd2 Kc6 37. Kc2 Kb5 38. Kb3 Bxb6 39. Bxb6 Rxb6 40. Rxa3 Re6 41. Ra4 Rxe2 1/2-1/2