[Event "Olympiad-18 Preliminaries B"]
[Site "Lugano"]
[Date "1968.10.24"]
[Round "7"]
[White "Zorigt, Damdzinhav"]
[Black "Byrne, Donald"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. f3 O-O 8. Be3 Nc6 9. Qd2 a5 10. O-O a4 11. a3 Bd7 12. Rad1 Qc8 13. Qe2 Ra5 14. Rd2 Ne5 15. Ba2 Rc5 16. Ndb5 Nc4 17. Bxc4 Rxc4 18. Na7 Qc7 19. Ncb5 Bxb5 20. Nxb5 Qc6 21. b3 axb3 22. cxb3 Rc1 23. Rxc1 Qxc1+ 24. Rd1 Qc8 25. Rc1 Qe6 26. Nd4 Qd7 27. Qb5 Rc8 28. Qxd7 Rxc1+ 29. Bxc1 Nxd7 30. Be3 Nc5 31. b4 Bxd4 32. Bxd4 Na4 33. Kf2 e5 34. Ba7 Kf8 35. Ke2 Ke7 36. Kd3 b5 37. g4 f6 38. h4 Ke6 39. h5 gxh5 40. gxh5 d5 41. Be3 Nb2+ 42. Kc2 Nc4 43. Bc1 f5 44. exd5+ Kxd5 45. Kb3 Kd4 46. a4 bxa4+ 47. Kxa4 1/2-1/2