[Event "St Petersburg International Preliminary"]
[Site "St Petersburg"]
[Date "1914.04.28"]
[Round "5"]
[White "Capablanca, Jose Raul"]
[Black "Lasker, Emanuel"]
[Result "1/2-1/2"]
[ECO "C49"]
[Annotator "Tactical Analysis 4.1 (180s)"]
[PlyCount "98"]
[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 0,98,25,16,10,25,17,-4,16,9,21,28,7,13,13,5,0,9,3,-2,10,0,29,39,32,45,
42,43,61,82,87,58,78,60,73,86,111,87,84,102,147,129,212,198,185,198,225,162,
156,131,82,69,62,55,54,19,59,43,28,25,25,21,29,36,53,67,70,49,69,69,75,64,80,
74,66,65,66,65,80,80,79,71,76,72,70,62,45,42,42,57,45,54,54,45,47,45,47,47,40,
0,40]} {Analiza Fat Fritz 2.0.} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5.
O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 h6 9. Bh4 Bg4 10. h3 Bxf3 11. Qxf3 g5 {
C49: Four Knights: 4 Bb5 Bb4.} 12. Bg3 Nd7 $146 ({Predecessor:} 12... Nh7 13.
Rab1 Qc8 14. Rfd1 Kg7 15. d4 f6 16. Be2 Ne7 17. Qd3 Rb8 18. Bg4 Qe8 19. Qc4 h5
20. Be6 Qc6 21. Qd3 h4 22. Bh2 Rfd8 23. d5 Qa4 24. g3 Ng6 25. Rb4 Qe8 26. Rdb1
b6 27. Qa6 Nhf8 28. Bg4 hxg3 29. fxg3 Nd7 30. Qxa7 Rdc8 31. Qa6 Nc5 32. Qe2 Rd8
33. Rf1 Ra8 34. h4 gxh4 35. gxh4 Qf7 36. h5 Nf8 37. Bg3 Kh8 38. Bh4 Nh7 39. Bf5
Rg8+ 40. Kh1 Raf8 41. Rbb1 Qe7 42. Rg1 Rxg1+ 43. Rxg1 Rg8 44. Rg6 Rxg6 45. hxg6
Ng5 46. Qh5+ Kg8 47. Bxg5 fxg5 48. Be6+ Nxe6 49. dxe6 Qf6 50. Qh7+ Kf8 51. Kg2
g4 52. Qf7+ Qxf7 53. gxf7 d5 54. Kg3 {1-0 (54) Janowski,D-Tarrasch,S Vienna
1898}) 13. d4 f6 (13... a6 $14 14. Bxc6 bxc6) 14. Qg4 Kh8 15. h4 Rf7 (15... Qe7
$14) 16. hxg5 ({White should try} 16. Bc4 $16 Rg7 17. Rfd1) 16... hxg5 $14 17.
f3 Nf8 18. Kf2 {Strongly threatening Rh1+.} Rh7 19. Rh1 {Rxh7+ is the strong
threat.} Qe7 {[#]} (19... Qd7 $1 $11) 20. Qf5 $1 $16 Rd8 (20... a6 $16 {
might work better.} 21. Bc4 Qg7 22. Rxh7+ Nxh7) 21. Rxh7+ $18 Nxh7 22. Rh1 Rg8
23. Bxc6 (23. Bc4 $18) 23... bxc6 $16 24. Rb1 $2 (24. Ke2 $18) 24... Kg7 $11
25. Rb7 Ra8 26. Kg1 Nf8 27. d5 c5 (27... Qd8 $11 {is more appropriate.} 28. c4
cxd5 $11) 28. Bf2 (28. c4 $14 Qd8 29. Be1 Rb8 30. Rb3 Rb6 31. Bd2 Ra6 32. f4
gxf4 33. Qg4+ Ng6 34. g3 Rb6 35. gxf4 Rxb3 36. cxb3 exf4 37. Bxf4 Qe8 $11)
28... Qd8 29. g3 Rb8 30. Rb3 ({Don't play} 30. Rxa7 Rb1+ 31. Kg2 Qb8 $17) 30...
Rxb3 31. cxb3 Qd7 (31... Qe8 $11 {should be considered.} 32. Kg2 a5 33. c4 Qb8
34. f4 exf4 35. gxf4 gxf4 36. Bh4 Qd8 37. Qxf4 Ng6 $11) 32. Qxd7+ $1 $14 Nxd7 {
[%mdl 4096] Endgame KB-KN} 33. Kf1 Kg6 34. Ke2 f5 $2 {[#]} (34... a6 $1 $14 35.
b4 cxb4 36. cxb4 Kf7 37. a4 Ke8 38. Kf1 Ke7 39. Be3 Ke8 40. Kg2 Nb6 41. a5 Nc8
42. Kh3 Kd7 43. Kg4 Ne7 $11 44. b5 axb5 45. a6 Kc8 46. Bd2 Kb8 47. Kh5 Ka7 48.
g4 Kxa6 49. Kh6 c5 50. dxc6 Nxc6 51. Kg6 Nd4 52. Kxf6 Nxf3 53. Bb4 Kb6 54. Ke6
Kc6 55. Bxd6 Nh2 56. Be7 Nxg4 57. Kf5 Ne3+ 58. Kxe5 $11 {Tablebases.}) 35. g4
$2 (35. exf5+ $1 $18 Kxf5 36. g4+ Kg6 37. c4 Nf6 38. Be1 e4 39. Ba5 exf3+ 40.
Kxf3 Ne8 41. b4 Kf6 42. Ke4 Kg6 43. b5 Nf6+ 44. Kf3 Ne8 45. Ke3 Kf6 46. Ke4 Kg6
47. Kd3 Kf7 48. Kc2 Nf6 49. Bxc7 Ke7 50. Ba5 Nxg4 51. Bd2 Ne5 52. Bxg5+ Kd7 53.
Kc3 Kc7 54. a4 a5 55. Bd2 Ng4 56. Kc2 Kb6 57. Bg5 Kc7 58. Bf4 Nf2 59. Bg3 Ng4
60. Kd3 Nf6 61. Be1 Kb6 62. Bh4 Nd7 63. Bd8+ $18) 35... fxe4 {The position is
equal.} 36. fxe4 Nf6 37. Kf3 Kf7 38. Be3 Nh7 39. b4 cxb4 40. cxb4 {And now a4
would win.} a6 41. a4 {Black must now prevent b5.} Ke7 42. b5 axb5 43. axb5 Kd7
44. Bf2 Kc8 45. Be3 Kd7 46. Bf2 Kc8 47. Be3 Kd7 48. Bf2 Kc8 49. Be3 Kd7 {
Weighted Error Value: White=0.29/Black=0.25} 1/2-1/2
