[Event "St Petersburg International Preliminary"]
[Site "St Petersburg"]
[Date "1914.04.22"]
[Round "2"]
[White "Alekhine, Alexander"]
[Black "Blackburne, Joseph Henry"]
[Result "1/2-1/2"]
[ECO "C61"]
[Annotator "Tactical Analysis 4.1 (180s)"]
[PlyCount "89"]
[EventDate "1914.04.21"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RUS"]
[SourceTitle "Tarrasch"]
[Source "ChessBase"]
[SourceDate "2018.10.02"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.02"]
[SourceQuality "1"]
{[%evp 11,89,61,82,50,73,31,32,-12,-16,-47,-38,-321,-311,-325,-309,-352,-344,
-352,-336,-298,-328,-349,-355,-359,-332,-365,-333,-338,-303,-390,-371,-409,
-400,-386,-400,-385,-366,-348,-83,-131,-131,-83,-115,-200,-200,-217,-217,-217,
-217,-217,-217,-217,-217,-217,-217,-217,-217,-217,-217,-217,-209,-209,-70,-80,
-20,-70,-11,-19,-19,-19,-10,-19,-19,-19,-9,-9,0,0,0,0]} {Analizada por Fat
Fritz 2.0.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O g6 6. d3 Bg7 7.
f4 {C61: Ruy Lopez: Bird's Defence.} c6 8. Bc4 $146 (8. Ba4 $16) ({Predecessor:
} 8. Ba4 d6 9. Bb3 Bd7 10. Nd2 a5 11. Nc4 a4 12. Nxd6+ Ke7 13. Nxf7 Qc7 14.
Nxh8 axb3 15. Nxg6+ hxg6 16. cxb3 {0-1 (35) Capablanca,J-Miotkowski,S
Philadelphia 1910}) 8... d5 $14 9. exd5 (9. Bb3 $14) 9... cxd5 $11 10. Bb5+ Kf8
11. Nd2 $2 {[%mdl 8192]} (11. Ba4 $15) 11... Qa5 $19 12. a4 a6 13. Nb3 Qd8 14.
Bd2 axb5 15. axb5 Rxa1 16. Bb4+ Ne7 17. Qxa1 Bf6 18. Qa7 b6 19. Re1 Be6 20. Kh1
h5 21. Bxe7+ Qxe7 (21... Bxe7 $2 22. Nxd4 Qd6 23. Nxe6+ fxe6 24. c3 $17) 22.
Qxb6 Qb4 {[%CAl Rb4e1] [#]} 23. Qc5+ Qxc5 24. Nxc5 Bd8 (24... Ke7 $19 25. b6
Kd6) 25. Nxe6+ $17 fxe6 26. Rxe6 {[%mdl 4096] Endgame KRB-KR} Kf7 27. Rd6 (27.
Rc6 $17 {is a better defense.}) 27... Be7 $19 28. Rxd5 Rc8 29. c4 dxc3 30. bxc3
Rxc3 {[%CAl Rc3c1] [#]} 31. Kg1 Ke6 32. Re5+ Kd6 33. Re3 Rb3 34. Kf1 Rb4 35.
Re4 Rb2 36. Re3 h4 (36... Rb4 $19 37. g3 Rxb5) 37. Re4 Bf6 (37... Rxb5 $2 38.
g3 $19) (37... h3 $17 38. gxh3 Rxh2) 38. b6 ({White should try} 38. Re8 $1 $11)
38... Kd5 (38... Rxb6 $2 39. Kf2 $19) (38... Kd7 $15 39. Re2 Rxb6) 39. Re8 $11
{The position is equal.} Rxb6 {aiming for ...Rb2.} 40. Kf2 Rb3 41. Rg8 Rxd3 {
White must now prevent ...Ke4.} 42. Rxg6 Ke6 {White should prevent ...Kf7.} 43.
g4 hxg3+ 44. hxg3 Kf5 45. Rg8 {And White is the lucky defender. Weighted
Error Value: White=0.35/Black=0.26} 1/2-1/2
