[Event "Mar del Plata International-29"]
[Site "Mar del Plata"]
[Date "1971.03.23"]
[Round "2"]
[White "Panno, Oscar"]
[Black "Sumiacher, Carlos"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. Nc3 Bg7 5. e4 cxd4 6. Nxd4 d6 7. Be2 Nc6 8. Be3 Bd7 9. O-O O-O 10. Nb3 Na5 11. f3 a6 12. Qd2 Re8 13. Rfd1 Be6 14. Nd5 Nxb3 15. axb3 Bxd5 16. exd5 Nd7 17. b4 b6 18. Ra4 a5 19. Rda1 Rb8 20. Bf2 Qc7 21. R1a2 Rb7 22. g3 Ra8 23. bxa5 Rxa5 24. b4 Rxa4 25. Rxa4 Ra7 26. Qa2 Rxa4 27. Qxa4 Bc3 28. Kg2 Kg7 29. f4 Qb7 30. Bf3 Kg8 31. Be3 Kg7 32. Kf2 Nb8 33. Qa3 Bf6 34. Be2 Kf8 35. Ke1 Ke8 36. Kd1 Qa6 37. Qxa6 Nxa6 38. Bd2 Nb8 39. Kc2 Kd7 40. Be3 Kc7 41. Kb3 Kb7 42. h4 e5 43. f5 gxf5 44. Bh5 f4 45. Bf2 fxg3 46. Bxg3 Nd7 47. Bxf7 Nf8 48. h5 Bg5 49. Kc3 Nd7 50. Kd3 Nf6 51. Bf2 Kc7 52. c5 bxc5 53. bxc5 dxc5 54. Bxc5 Nd7 55. Bb4 Nf6 56. Kc4 Ne4 57. Kd3 Nd6 58. Be6 h6 59. Ba5+ Kb7 60. Bd7 Ka6 61. Bb4 Be7 62. Bd2 Bf8 1/2-1/2