[Event "St Petersburg International Preliminary"]
[Site "St Petersburg"]
[Date "1914.05.07"]
[Round "11"]
[White "Lasker, Emanuel"]
[Black "Gunsberg, Isidor"]
[Result "1-0"]
[ECO "C87"]
[Annotator "Tactical Analysis 4.1 (180s)"]
[PlyCount "51"]
[EventDate "1914.04.21"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RUS"]
[SourceTitle "Lasker"]
[Source "ChessBase"]
[SourceDate "2002.01.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.01.23"]
[SourceQuality "1"]
{[%evp 18,51,76,45,99,81,120,42,48,51,62,22,43,21,25,-5,198,203,323,310,351,
347,363,362,357,354,356,291,286,286,548,375,838,836,813,722]} {Analiza Fat
Fritz 2.0.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Bd7 7. c3
Be7 8. d4 O-O 9. Nbd2 b5 10. Bb3 exd4 $146 {C87: Closed Ruy Lopez:
Steinitz-type lines after 6 Re1 d6.} (10... a5 $14) ({Predecessor:} 10... Ne8
11. Nf1 Bf6 12. Be3 g6 13. Qd2 Ng7 14. Rad1 Bc8 15. dxe5 dxe5 16. Qxd8 Nxd8 17.
Bd5 c6 18. Bb3 Nb7 19. h3 Ne6 {½-½ (19) Teichmann,R-Marco,G Ostend Masters
(13) 1905}) 11. cxd4 $16 Bg4 {[#] next ...Nxd4! is good for Black.} 12. Nf1 $2
({Better is} 12. h3 $1 $16 Bh5 13. d5 $1 {Frenando todo intento de contrajuego
de las negras, como demuestra el siguiente enfrentamiento, a modo de ejemplo,
de dos módulos informáticos actuales:} Ne5 14. g4 Bg6 15. Nd4 c5 16. dxc6 Rc8
17. g5 Bh5 18. N2f3 Ne8 19. Bd5 Nxf3+ 20. Nxf3 Nc7 21. Bd2 Kh8 22. Qb3 Bxf3 23.
Qxf3 Bxg5 24. Ba5 Bf6 25. a4 Bd4 26. axb5 axb5 27. Red1 Be5 28. Kf1 h6 29. Bb6
Rb8 30. Bxc7 Qxc7 31. Rd2 Qe7 32. Qd3 Qc7 33. Rc2 Rfc8 34. Qf3 Rf8 35. Ra6 Bd4
36. b4 Rbe8 37. Qd3 Ba7 38. Qxb5 Rb8 39. Qc4 Bb6 40. Qd3 Ra8 41. b5 Rab8 42.
Kg2 Bc5 43. e5 f5 44. Be6 Qe7 45. c7 Qxc7 46. exd6 Qb7+ 47. Rc6 Bb6 48. d7 Rbd8
49. f3 Ba7 50. b6 Rf6 51. bxa7 Qxa7 52. Bxf5 Rxf5 53. Qxf5 Qxd7 54. Qe5 {
1-0 (54) Fat Fritz 2-Dragon by Komodo Chess 64-bit Tenerife - 40 jugadas en 1
hora sin finish - 2021}) 12... d5 $1 $14 {White is slightly better.} 13. e5 {
[%CAl Re5f6]} Ne4 14. Ne3 Be6 15. Qc2 Nb4 16. Qb1 $36 {[%mdl 2048] [#] White
has some pressure.} f5 $2 {Loses the game.} (16... c5 $1 $11 {and Black has
nothing to worry. En efecto. Veamos otro ejemplo informático:} 17. Nxd5 Bxd5
18. Bxd5 Qxd5 19. Rxe4 c4 20. Bd2 Nd3 21. Re2 f6 22. e6 Rfe8 23. a4 Rab8 24.
Qc2 Bd6 25. axb5 axb5 26. b3 Ra8 27. Rxa8 Rxa8 28. Qb1 h6 29. bxc4 bxc4 30. h3
Kh7 31. Re3 Ra7 32. Bc3 Rb7 33. Qf1 Rb3 34. Bd2 Be7 35. Qa1 Qf5 36. Qa5 Qxa5
37. Bxa5 c3 38. Rxd3 c2 39. Rxb3 c1=Q+ 40. Be1 Qc6 41. Re3 Qc4 42. Ba5 Qc2 43.
Ne1 Qb1 44. Bc3 Qb3 45. Nf3 Qa2 46. g3 Kg8 47. Be1 Qd5 48. Nh4 Kh7 49. Nf3 g5
50. g4 {½-½ (50) Fat Fritz 2-Dragon by Komodo Chess 64-bit Tenerife - 40
jugadas en 1 hora sin finish - 2021}) 17. a3 $18 Nc6 {[#]} (17... f4 $142) 18.
Qa2 $1 Ng5 19. Nxg5 ({Inferior is} 19. Nxd5 Nxf3+ 20. gxf3 Nxd4 $15) 19... Bxg5
20. Bxd5 Bxd5 21. Nxd5 ({Weaker is} 21. Qxd5+ Qxd5 22. Nxd5 Bh4 $18) 21... Kh8
22. f4 Bh4 23. Rd1 Qe8 $2 {[#]} (23... Nxd4 {was worth a try.} 24. Rxd4 c6) 24.
Be3 Rd8 $2 (24... Rc8 25. g3 Bd8) 25. Nxc7 Qh5 26. b4 {Weighted Error Value:
White=0.31/Black=0.65} 1-0
