Con ECO B52
Sisniega - Amador
Mundial Estudiantil XXII Ciudad México 1977
Siciliana B52
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1. e4 c5 2. Nf3 d6 3. Bb5 Bd7 4. Bd7 Qd7 5. c4 [5. O-O Nc6] 5... Nc6 6. d4 cd4 7. Nd4 Nf6 8. Nc3 e6 9. O-O Be7 10. Nc2!? [10. Be3] [10. b3] 10... O-O 11. Bf4 Rfd8 12. Qe2 Ne5 13. Rfd1 Qc7 14. Ne3 a6 [14... Rac8 equal chances, quiet position] 15. Rac1 Ng6 16. Bg3 Qa5 17. c5! Qc5 [17... dc5 18. Nc4 Qb4 19. a3 Qb3 20. Na5 Qb6 21. Nc4 Forçant la nulle] 18. Ncd5 Qb5 19. Ne7 Ne7 20. Qb5 ab5 21. Bd6 Nc6 22. e5 Ne4 23. a3 f6 24. f3 Nd6 25. ed6 Ra4 26. Rc5 Nd4 27. Nc2 b6 28. Nd4 Rd4 29. Rd4 bc5 30. Rd3 c4 31. Rd4 Kf7 32. Kf2 Ke8 33. Ke3 Kd7 34. a4 e5 35. Rh4 Kd6 36. ab5 Kd5 37. Rh7 Rd7 38. Kd2 Kc5 39. Kc2 Kb5 40. h4 Rd4 41. h5 Rh4! 42. Kc3 f5 [42... e4 43. fe4 Rg4 44. Kd4 Rg2] 43. Rg7 Rh5 44. Re7 f4 45. Rd7 Kc5 46. Rd8 Rg5 47. Rc8 Kb5 48. Rc4 Rg2 49. Re4 Rf2 50. Re5 Kc6 51. Kd4 Rf3 52. Ke4 Re3 53. Kf4 Re5 54. Ke5 Kc5 55. Ke4 Kc4 56. b4 Kb4 57. Kd4
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