[Event "St Petersburg International Final"]
[Site "St Petersburg"]
[Date "1914.05.14"]
[Round "4"]
[White "Lasker, Emanuel"]
[Black "Tarrasch, Siegbert"]
[Result "1-0"]
[ECO "D30"]
[Annotator "Tactical Analysis 4.1 (180s)"]
[PlyCount "91"]
[EventDate "1914.05.10"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "RUS"]
[SourceTitle "Tarrasch"]
[Source "ChessBase"]
[SourceDate "2018.10.02"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.02"]
[SourceQuality "1"]
{Analizada por Fat Fritz 2.0.} 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. g3
Nc6 6. Bg2 Nf6 7. O-O Be7 8. dxc5 Bxc5 9. Nbd2 $146 {[#]} (9. Nc3 O-O 10. Bg5
Be6 11. Qa4 Be7 12. Rfd1 Qb6 13. Qb5 Qxb5 14. Nxb5 h6 15. Bf4 g5 16. Be3 Ng4
17. Bd2 Bc5 18. e3 Rad8 19. Bc3 f6 20. h3 Nge5 21. Nxe5 fxe5 22. Nc7 Bf7 23.
Nxd5 Be6 24. a3 a6 25. Nc7 Bc8 26. Bd5+ Kh7 27. Be6 Bb6 28. Bxc8 Rxc8 29. Rd7+
Kg6 30. Nd5 Ba7 31. Rxb7 Rcd8 32. Ne7+ Nxe7 33. Rxe7 Bb8 34. Kf1 Kf6 35. Rb7
Ke6 36. Rb6+ Rd6 37. Rxd6+ Bxd6 38. Rd1 Rf7 39. Ke2 Rb7 40. e4 Rb5 41. a4 Rb7
42. Rd5 Rc7 43. Kd3 Rf7 44. Ke3 Rc7 45. Ke2 Rc4 46. Ra5 Rc6 47. Kf3 Bc5 48. Kg4
Bd4 49. Bxd4 exd4 50. f4 gxf4 51. gxf4 Rd6 52. f5+ Kf7 53. Rd5 Rb6 54. Rxd4
Rxb2 55. Rd7+ Kf6 56. Rd6+ Kg7 57. Rxa6 {1-0 (57) Kupchik,A-Zapoleon,L,
American National Manhattan CC New York (1) 1913}) 9... d4 $2 {D30: Queen's
Gambit Declined: Systems without Nc3.} ({Better is} 9... O-O $11) 10. Nb3 Bb6
11. Qd3 Be6 {White is slightly better.} 12. Rd1 Bxb3 13. Qxb3 Qe7 14. Bd2 O-O
15. a4 $1 Ne4 ({Don't go for} 15... Qxe2 $2 16. Re1 $18) (15... Rac8 $16 {
was necessary.}) 16. Be1 $1 $18 Rad8 {[#]} (16... Rab8 $16) 17. a5 $1 {[%CAl
Ra5b6]} Bc5 18. a6 $1 bxa6 19. Rac1 ({Much less strong is} 19. Rxa6 $6 Bb6 $14)
({White should play} 19. Nh4 $18) 19... Rc8 (19... g6 $16 {keeps fighting.})
20. Nh4 Bb6 $2 (20... Nf6 {is a better defense.} 21. Nf5 Qe5) 21. Nf5 Qe5 22.
Bxe4 Qxe4 23. Nd6 {[%csl LRc8,LRe4]} Qxe2 {Strongly threatening ...Rc7.} 24.
Nxc8 Rxc8 25. Qd5 Qe6 26. Qf3 (26. Qxe6 $18 {and the rest is easy.} fxe6 27. f4
) 26... h6 (26... h5 $16) 27. Bd2 $1 Ne5 28. Rxc8+ Qxc8 29. Qe4 Nd7 30. Rc1 Qf8
{[#]} 31. Bxh6 $1 Nc5 32. Qg4 f5 33. Qg6 {And now b4 would win.} ({Not} 33.
Qxd4 gxh6 34. Qd5+ Kg7 $11) 33... Qf7 34. Qxf7+ Kxf7 {[%mdl 4096] Endgame
KRB-KBN} 35. Bg5 Nd3 36. Rb1 Ke6 37. b3 Kd5 38. f3 a5 39. h4 Nc5 40. h5 d3 41.
Kf1 a4 $2 (41... Nd7 {was worth a try.} 42. Bf4 Nf6) 42. bxa4 {White is
clearly winning.} Nxa4 {[#]} 43. Bf6 $1 {[%mdl 512]} Ke6 (43... gxf6 44. h6)
44. Bxg7 Kf7 45. Be5 Nc5 46. Rd1 {Weighted Error Value: White=0.15/Black=0.46}
1-0
