[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "14"]
[White "Ivkov, Borislav"]
[Black "Kotov, Alexander"]
[Result "0-1"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. Nf3 Bg4 5. e3 Nc6 6. Be2 e5 7. d5 Nce7 8. e4 Nf6 9. O-O O-O 10. Ne1 Bxe2 11. Qxe2 c5 12. Nd3 Nd7 13. Be3 f5 14. f3 Nf6 15. a3 b6 16. b4 Qd7 17. Rab1 f4 18. Bd2 g5 19. bxc5 bxc5 20. Rb3 Ng6 21. Rfb1 Rf7 22. Qd1 Bf8 23. Be1 Rg7 24. R3b2 g4 25. fxg4 Nxg4 26. Rb7 Qc8 27. Rxg7+ Bxg7 28. Bf2 Kh8 29. Qa4 Nxf2 30. Nxf2 Nh4 31. Qd1 f3 32. g3 Bh6 33. Qd3 Qg8 34. Kf1 Rf8 35. Ncd1 Ng2 36. Rb2 Qg5 37. Qb1 Qh5 38. Kg1 Nf4 39. Kh1 Ne2 40. g4 Qg5 41. Qd3 Qh4 42. Rxe2 fxe2 43. Qxe2 0-1