[Event "Piatigorsky-Cup 2nd"]
[Site "Santa Monica"]
[Date "1966.08.14"]
[Round "17"]
[White "Donner, Jan Hein"]
[Black "Ivkov, Borislav"]
[Result "0-1"]

1. d4 g6 2. e4 Bg7 3. c4 d6 4. Nc3 e5 5. Nge2 Nc6 6. d5 Nce7 7. g3 f5 8. Bg2 Nf6 9. f3 O-O 10. O-O c6 11. Kh1 cxd5 12. cxd5 Qb6 13. Qb3 Qxb3 14. axb3 Bd7 15. Be3 a6 16. h3 Rac8 17. Rac1 h5 18. Rc2 Kh7 19. Rfc1 Bh6 20. Bxh6 Kxh6 21. Na4 Rxc2 22. Rxc2 Rc8 23. Rxc8 Nxc8 24. Kg1 b5 25. Nac3 b4 26. Nb1 Bb5 27. Nc1 Nb6 28. Kf2 Nbd7 29. Ke3 Nc5 30. Nd2 a5 31. f4 fxe4 32. Bxe4 exf4+ 33. Kxf4 Ncxe4 34. Nxe4 Nxe4 35. Kxe4 g5 0-1