[Event "URS-ch20 Quarterfinal"] [Site "Riga (Latvia)"] [Date "1951.11.??"] [Round "?"] [White "Estrin, Yakov Borisovich"] [Black "Spassky, Boris Vasilievich"] [Result "0-1"] [ECO "C44"] [Annotator "Jimenez,A sobre Bernard Cafferty"] [PlyCount "38"] [EventDate "1951.11.29"] [EventType "tourn"] [EventRounds "15"] [EventCountry "URS"] [Source "ChessBase"] [SourceVersion "1"] [SourceVersionDate "2010.11.25"] [SourceQuality "1"] {[%evp 0,38,17,28,28,28,20,-14,26,26,54,54,79,-20,-42,-42,-42,-98,-98,-102,-43, -87,-87,-87,-132,-136,-107,-107,-107,-107,-107,-107,-107,-232,-89,-292,-292, -777,-775,-2789,-2256]} 1. e4 e5 2. Nf3 Nc6 3. c3 f5 4. d4 fxe4 5. Nxe5 Qf6 6. Nc4 (6. Ng4 Qg6 7. Bf4 d6 8. Ne3 Nf6 9. Na3 Be7 10. Qb3 a6 11. Nac2 Nd8 12. Bg3 Nf7 13. Bc4 O-O 14. Be6 Bxe6 15. Qxe6 Rfe8 16. Qb3 Rab8 17. a4 Kh8 18. a5 Nd8 19. O-O Nh5 20. Ra4 Bg5 21. d5 Bxe3 22. Nxe3 Qg5 23. Rc4 Nxg3 24. hxg3 Qe7 25. Rd1 c5 26. dxc6 Nxc6 27. Rd5 Qd8 28. Qa4 Qe7 29. Qc2 Rbd8 30. Ra4 Qe6 31. Rc4 Rd7 32. b4 g6 33. g4 Kg7 34. g5 Rdd8 35. b5 axb5 36. Rxb5 Rd7 37. Rd5 Rc7 38. Qa4 Qd7 39. Rxe4 Re5 40. Rexe5 Nxe5 41. Qd4 {1-0 (41) Ljubojevic,L (2620)-Pachman,L (2520) Manila 1976}) 6... d5 7. Ne3 Be6 8. Bb5 Bd6 9. O-O Nh6 $1 10. f3 Qh4 { Con ataque} 11. g3 Bxg3 12. hxg3 Qxg3+ 13. Ng2 Bh3 14. Qe2 O-O 15. Qf2 Qg6 16. Be2 Rf6 17. f4 Nf5 18. Kh2 Qh6 19. Rh1 Bxg2+ 0-1