[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.10"]
[Round "14"]
[White "Jones, Iolo Cerredig"]
[Black "Johannessen, Svein"]
[Result "1/2-1/2"]
[WhiteElo "2250"]
[BlackElo "2400"]

1. c4 Nf6 2. Nf3 e6 3. d4 b6 4. g3 Ba6 5. Qc2 c5 6. Bg2 Nc6 7. dxc5 Bxc5 8. a3 Rc8 9. Qa4 Bb7 10. O-O a5 11. Nc3 O-O 12. Bg5 h6 13. Bxf6 Qxf6 14. Ne4 Qe7 15. Rfd1 Rfd8 16. Rac1 f5 17. Nxc5 bxc5 18. Qc2 Rb8 19. Rd2 Ba8 20. Rcd1 d6 21. Qc3 a4 22. Qc2 Rb3 23. Rd3 Na5 24. Nd2 Rxd3 25. exd3 Bxg2 26. Kxg2 Qb7+ 27. Kg1 Nb3 28. Nxb3 axb3 29. Qe2 e5 30. Rc1 Kh7 31. Qd1 Rb8 32. Rc3 Qc6 33. Qh5 g6 34. Qd1 Qb7 35. Qe2 Ra8 1/2-1/2