Yepez Obando, Olavo VS Stein, Leonid 1970.06.20

[Event "Caracas"]
[Site "Caracas"]
[Date "1970.06.20"]
[Round "1"]
[White "Yepez Obando, Olavo"]
[Black "Stein, Leonid"]
[Result "0-1"]

1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. f3 O-O 6. Be3 b6 7. Bd3 e5 8. Nge2 c5 9. d5 Ne8
10. Qd2 f5 11. a3 Nd7 12. b4 Ndf6 13. Bg5 Qc7 14. O-O f4 15. Nc1 h6 16. Bxf6 Bxf6 17. Nb3
Bd8 18. Rab1 a6 19. bxc5 bxc5 20. Rb2 g5 21. g4 h5 22. h3 Nf6 23. Be2 Ra7 24. Kg2 Qh7 25.
Rh1 Raf7 26. Qd3 Qg7 27. Nd2 Ba5 28. Rb8 Nd7 29. Rbb1 Qf6 30. Nd1 Rh7 31. Nf2 Kg7 32. Bd1
Rfh8 33. Be2 Nf8 34. Nb3 Bc7 35. Qc3 Qd8 36. Rbg1 Ng6 37. Kf1 a5 38. Nc1 Bd7 39. Bd1 a4
40. Ke2 Ba5 41. Qb2 Qa8 42. Qc2 Rb8 43. Qd3 Rb2+ 44. Bc2 Qh8 45. Nd1 Rxc2+ 46. Qxc2 hxg4
47. fxg4 Rxh3 48. Nf2 Re3+ 49. Kd1 Qb8 50. Rh3 Nh4 51. Rxe3 fxe3 52. Nfd3 Nf3 53. Rg3 Nd4
54. Qa2 Bd2 0-1