[Event "Mar del Plata International-29"]
[Site "Mar del Plata"]
[Date "1971.03.26"]
[Round "4"]
[White "Poch, Cesar Guillermo"]
[Black "Pilnik, Hermann"]
[Result "1/2-1/2"]

1. Nf3 d5 2. c4 e6 3. g3 dxc4 4. Qa4+ Qd7 5. Qxc4 Qc6 6. b3 Nf6 7. Bg2 Qxc4 8. bxc4 Nc6 9. Bb2 Bd7 10. O-O O-O-O 11. d3 Be8 12. Nbd2 Nd7 13. Nb3 Rg8 14. a4 Nc5 15. Nxc5 Bxc5 16. a5 Nd4 17. Nxd4 Bxd4 18. Rfb1 Bxb2 19. Rxb2 Bc6 20. Bxc6 bxc6 21. a6 Kd7 22. Rb7 Ra8 23. Kg2 Rgd8 24. Kf3 Kd6 25. Ke3 c5 26. Ra5 Rdb8 27. g4 h6 28. Ke4 f5+ 29. gxf5 exf5+ 30. Kf3 Re8 31. Ra1 g5 32. e3 Re6 33. Ra5 f4 34. e4 Re5 35. Rb1 Rd8 36. Rb7 Ra8 37. Rab5 Re6 38. Kg4 Kc6 39. Ra5 Rd6 40. Rbb5 Rxd3 41. Rxc5+ Kd7 42. Rd5+ Rxd5 43. Rxd5+ Ke6 44. Rc5 Kd6 45. Rb5 c6 46. Rb7 Ke5 47. f3 Rd8 48. Rxa7 Rd2 49. Re7+ Kf6 50. a7 h5+ 51. Kh3 Ra2 52. Rh7 Kg6 53. Rc7 Ra3 54. Rxc6+ Kg7 55. Rc7+ Kg6 56. c5 g4+ 57. Kh4 1/2-1/2