[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.07"]
[Round "3"]
[White "Trikaliotis, Georgios"]
[Black "Malagon, Alberto"]
[Result "1/2-1/2"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. Nc3 Be7 5. d5 exd5 6. cxd5 d6 7. e4 O-O 8. Be2 Re8 9. h3 Bf8 10. Qc2 a6 11. a4 Nbd7 12. Bg5 Qa5 13. O-O Qb4 14. a5 b5 15. axb6 Qxb6 16. Nd2 Rb8 17. Ra2 h6 18. Bh4 Be7 19. Nc4 Qc7 20. Bg3 Rb4 21. f4 Bf8 22. e5 dxe5 23. fxe5 Nxe5 24. Nxe5 Rxe5 25. Bd3 c4 26. Bxe5 Qxe5 27. Bf5 Bc5+ 28. Kh1 Bd6 29. g4 Bb7 30. Ra5 Bc7 31. Rc5 Bb6 32. Rc6 Nxd5 33. Qe4 Qxe4+ 34. Bxe4 Bxc6 35. Nxd5 Bxd5 36. Bxd5 Bd4 37. Rxf7 Kh7 38. Be4+ Kg8 39. Bd5 Kh7 40. Be4+ Kg8 1/2-1/2