[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.10.26"]
[Round "2"]
[White "Chavez, Romelio"]
[Black "Schumacher, Helmut"]
[Result "0-1"]
[WhiteElo "2265"]

1. e4 e6 2. d4 d5 3. Nc3 Be7 4. e5 b6 5. Bb5+ c6 6. Bd3 Ba6 7. Nge2 h5 8. Be3 Bxd3 9. Qxd3 Nh6 10. h3 Nf5 11. O-O-O b5 12. g4 Nxe3 13. Qxe3 Qa5 14. Ng3 h4 15. Nh5 b4 16. Nb1 Rg8 17. f4 Nd7 18. f5 Qxa2 19. Rhf1 b3 20. c3 Nb6 21. Nxg7+ Kd7 22. Rf2 Rxg7 23. f6 Bxf6 24. exf6 Rg6 25. Re1 Nc4 26. Qf3 a5 27. Ree2 Qa1 28. Qd3 Re8 29. Kd1 a4 30. Kc1 Kd6 31. Qd1 Rb8 32. Qd3 a3 33. bxa3 Nxa3 34. Rb2 Nxb1 35. Qxb1 Qxb1+ 36. Kxb1 c5 37. Rbe2 c4 38. Re5 Ra8 39. Rh5 Rgg8 40. Rb2 Ra7 41. Kc1 Ra1+ 42. Rb1 Ra2 43. Rb2 Rga8 44. Rh7 Ra1+ 45. Rb1 R8a2 46. Rxa1 b2+ 0-1