[Event "URS-ch38 Final"]
[Site "Riga"]
[Date "1970.12.21"]
[Round "18"]
[White "Stein, Leonid"]
[Black "Zaitsev, Igor A"]
[Result "1/2-1/2"]

1. Nf3 c5 2. e4 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 Nxd4 8. Qxd4 Qa5 9. Bd2 e5 10. Qd3 Rc8 11. Nd5 Qd8 12. Bg5 Be7 13. Nxe7 Kxe7 14. O-O-O Qc7 15. Rd2 Be6 16. f3 Rhd8 17. Qa3 Qc5 18. Qxc5 dxc5 19. a4 h6 20. Rxd8 Rxd8 21. Be3 b6 22. a5 Ne8 23. b3 Nd6 24. Be2 Kd7 25. Kb2 Kc6 26. axb6 axb6 27. g4 Ra8 28. h4 b5 29. g5 hxg5 30. hxg5 g6 31. Bf2 b4 32. Bg3 c4 33. Bxe5 c3+ 34. Bxc3 bxc3+ 35. Kxc3 Ra5 36. Rg1 Ra8 37. Kd4 Nb5+ 38. Ke5 Nc7 39. Bd3 Ra5+ 40. Kd4 Bc8 41. f4 Ba6 42. Bxa6 Nxa6 43. Rf1 Nc7 44. f5 Nb5+ 45. Ke3 Nd6 46. fxg6 fxg6 47. Rf6 Rxg5 48. Kf4 Rg1 49. e5 g5+ 50. Kf3 Rf1+ 51. Kg4 Rxf6 52. exf6 Nf7 53. Kf5 Kd7 1/2-1/2