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

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Nge2 a6 8. a3 Bd7 9. b4 e5 10. d5 Ne7 11. g4 Ne8 12. Nc1 f5 13. Nb3 c6 14. g5 cxd5 15. cxd5 Bh8 16. Qd2 Ng7 17. O-O-O Nc8 18. Rg1 Nb6 19. Kb1 Nh5 20. Na5 Rb8 21. Rc1 Nf4 22. h4 Rf7 23. Ka2 Bg7 24. Kb3 Be8 25. Rh1 Nc8 26. Rh2 Rc7 27. Kb2 Kh8 28. Nb3 b5 29. Na5 fxe4 30. fxe4 Nb6 31. Ka2 Qc8 32. Ne2 Nxe2 33. Bxe2 Na4 34. Kb3 Bd7 35. Rhh1 Rxc1 36. Rxc1 Qf8 37. Qd1 Bh3 38. Qh1 Bd7 39. Qd1 Bh3 40. Qh1 Bd7 41. Qd1 Bh3 1/2-1/2