[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.10"]
[Round "14"]
[White "Wirthensohn, Heinz"]
[Black "Lein, Anatoly"]
[Result "1/2-1/2"]
[WhiteElo "2410"]
[BlackElo "2505"]

1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Bg5 Be7 5. e3 Nbd7 6. Nc3 c6 7. Qc2 a6 8. a3 b6 9. cxd5 cxd5 10. Bd3 Bb7 11. O-O Rc8 12. Qe2 b5 13. a4 b4 14. Na2 a5 15. Nc1 Bd6 16. Nb3 Qb6 17. Bxf6 Nxf6 18. Bb5+ Ke7 19. Rfc1 Rxc1+ 20. Rxc1 Rc8 21. Rxc8 Bxc8 22. Qc2 Ba6 23. Bxa6 Qxa6 24. Ne5 Bxe5 25. dxe5 Nd7 26. f4 Qc4 27. Qxc4 dxc4 28. Nxa5 Nb6 29. Nc6+ Kd7 30. Nxb4 Nxa4 31. Kf2 Nxb2 32. e4 Nd1+ 33. Ke2 Nc3+ 34. Ke3 Nb5 35. f5 Kc7 36. h4 Kb6 37. g4 Na7 38. Kd4 Kb5 39. Kc3 g6 40. fxg6 fxg6 41. g5 Kc5 42. Na6+ Kb6 1/2-1/2