[Event "Match/Nation URS-YUG"]
[Site "Sochi"]
[Date "1968.07.01"]
[Round "4"]
[White "Bronstein, David Ionovich"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. a3 h6 10. d4 Re8 11. d5 Na7 12. c4 c6 13. dxc6 Nxc6 14. cxb5 axb5 15. Nc3 Rb8 16. h3 Be6 17. Bxe6 fxe6 18. b4 Bf8 19. Qb3 Qd7 20. Rd1 Qf7 21. Be3 Red8 22. Rac1 Qe8 23. Rd2 Rdc8 24. Qb1 Nd8 25. Qd3 Nf7 26. Rdc2 Rd8 27. Nd2 d5 28. Bc5 Ng5 29. h4 Nf7 30. Ncb1 Nd6 31. Bxd6 Bxd6 32. Nc3 Be7 33. exd5 exd5 34. Qf5 Bd6 35. Nb3 Qd7 36. Qxd7 Rxd7 37. Nb1 d4 38. f3 Kf7 39. Rc6 Nd5 40. Ra6 Nb6 41. N1d2 Rc7 42. Rxc7+ Bxc7 43. Ra7 Nd5 44. Nc5 Kg8 45. Ne6 Rc8 46. Ne4 Kf7 47. N6c5 Kg8 48. Ne6 Kf7 49. N6c5 Kg8 50. Ne6 1/2-1/2