[Event "URS-ch31 Final"]
[Site "Leningrad"]
[Date "1963.11.??"]
[Round "6"]
[White "Averbakh, Yuri L"]
[Black "Kortschnoj, Viktor Lvovich"]
[Result "1/2-1/2"]

1. Nf3 c5 2. g3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Bg2 Bg7 6. Nxc6 bxc6 7. c4 Rb8 8. Qc2 Qb6 9. Nd2 Nh6 10. O-O Nf5 11. Nf3 c5 12. Rb1 O-O 13. b3 d6 14. e3 a5 15. Bb2 Bxb2 16. Qxb2 Bb7 17. Qc2 a4 18. bxa4 Qa6 19. Rb5 Bc6 20. Nd2 Bxb5 21. axb5 Qa3 22. Nb1 Qa5 23. a4 e6 24. Nc3 Ne7 25. Ne4 f5 26. Qc3 Qxc3 27. Nxc3 Nc8 28. a5 Rf7 29. Rd1 Ra7 30. a6 Kf7 31. e4 fxe4 32. Nxe4 d5 33. cxd5 exd5 34. Rxd5 Rxb5 35. Bf1 Rb1 36. Rxc5 Nb6 37. Kg2 Rb4 38. Nd6+ Ke7 39. Nb7 Rd4 40. Rc6 Nd5 41. Rc8 1/2-1/2