[Event "Olympiad-15 Preliminaries A"]
[Site "Varna"]
[Date "1962.09.19"]
[Round "4"]
[White "Hoen, Ragnar Harald"]
[Black "Diez del Corral, Jesus"]
[Result "1/2-1/2"]

1. e4 e6 2. c4 d5 3. cxd5 exd5 4. Qa4+ Nd7 5. Nc3 dxe4 6. Nxe4 Nf6 7. Be2 Nxe4 8. Qxe4+ Be7 9. Nf3 O-O 10. O-O Nf6 11. Qc2 Bg4 12. d4 c6 13. Be3 Qc7 14. h3 Bh5 15. Ne5 Bxe2 16. Qxe2 Nd5 17. Rac1 Rae8 18. Qf3 Bd6 19. Qxd5 cxd5 20. Rxc7 Bxc7 21. Nd7 f5 22. Nxf8 Kxf8 23. Rc1 Bd6 24. Kf1 h6 25. Bd2 Kf7 26. b3 g5 27. Re1 Re4 28. Bc3 g4 29. f3 Rxe1+ 30. Bxe1 gxh3 31. gxh3 Bf4 32. Kg2 Kg6 33. Bg3 Bc1 34. Be5 Kg5 35. Kg3 Bd2 36. f4+ Kg6 37. Kf3 Kh5 38. Bf6 Bc3 39. Kg3 Kg6 40. Be5 Bb4 41. Kf3 Kh5 1/2-1/2