A01 Nimzowitsch-Larsen Opening (1.b3 e5 2.Bb2 Nc6 3.e4 Nf6 4.Nc3)

[Event "Pogo"] [Site "Pogo"] [Date "2004.04.29"] [Round "?"] [White "AAMM4C"] [Black "Vierjoki, Timo"] [Result "1/2-1/2"] [ECO "A01"] [WhiteElo "1681"] [BlackElo "1819"] [Annotator "Tactical Analysis 2.10 (30s), TV"] [PlyCount "97"] [EventDate "2004.??.??"] 1. b3 e5 {A01 Nimzo-Larsen Attack: Modern Variation} 2. Bb2 Nc6 3. e4 Nf6 4. Nc3 {A01 Nimzowitsch-Larsen Opening} Bb4 5. a3 $146 (5. Nd5 Bc5 6. d3 O-O 7. Qd2 d6 8. b4 Nxd5 9. bxc5 Nde7 10. cxd6 cxd6 11. g3 d5 12. Bg2 dxe4 13. Bxe4 Bf5 14. Bg2 Qb6 15. Ba3 Rfd8 16. Ne2 e4 17. Nf4 Ng6 18. O-O Nd4 19. Kh1 exd3 { Ulanov,A (2425)-Prizant,J (2515) Yekaterinburg 2013 0-1 (102)}) (5. Nge2 O-O 6. g3 d5 7. exd5 Nxd5 8. Bg2 Nf6 9. O-O Bg4 10. a3 Bc5 11. h3 Bh5 12. b4 Bb6 13. Kh2 Nd4 14. f3 c6 15. d3 Ne6 16. Ne4 Nd5 17. Qd2 f5 18. Nc5 Nxc5 19. bxc5 Bxc5 {Kristinsson,O (2099)-Rothe,G (2171) Reykjavik 2011 0-1 (40)}) (5. Bc4 Bxc3 6. Bxc3 Nxe4 7. Nf3 Nxc3 8. dxc3 O-O 9. O-O d6 10. Bd5 Qf6 11. Re1 Qg6 12. Nh4 Qg4 13. Qxg4 Bxg4 14. f3 Be6 15. c4 Nb4 16. Rad1 c6 17. Bxe6 fxe6 18. Rxd6 Rfe8 19. Rxe5 Rad8 {Florian,S-Schaar,T Verdun Aller 2008 1/2-1/2 (55)}) 5... Bxc3 $1 6. Bxc3 {-1.79/24} ({White should play} 6. dxc3 $15 {-0.59/26} Nxe4 7. Qg4) 6... Nxe4 {-0.87/24} (6... O-O $19 {-1.79/24} 7. d3 d5) 7. Bb2 {-1.60/23} (7. Qg4 $142 {-0.87/24} Nf6 8. Qxg7) 7... O-O 8. Nf3 {Black is clearly better.} d5 { -1.33/26} (8... Nf6 $19 {-1.76/24} 9. Bb5 d6) 9. Bb5 {-1.94/24} (9. Be2 $17 { -1.33/26 is a better defense.}) 9... Nd4 {-1.06/27} (9... f6 $19 {-1.94/24} 10. Bxc6 bxc6) 10. Nxd4 $17 exd4 11. Bxd4 {-2.53/24} (11. Be2 $17 {-1.04/28}) 11... c6 $2 {0.08/27 [#]} (11... c5 $19 {-2.53/24} 12. Be3 f5) 12. Bd3 Nf6 {0.61/25} ({Black should try} 12... Re8 $15 {-0.31/26} 13. O-O Bf5) 13. O-O $14 Qd6 { 0.80/27} (13... Ne4 $14 {0.35/28 should be considered.}) 14. Qf3 $16 Bg4 15. Qg3 Qxg3 16. fxg3 {0.25/27} (16. hxg3 $16 {1.06/26} Rfe8 17. Rfe1) 16... Nd7 { 0.81/24} (16... Ne4 $11 {0.25/27}) 17. Bf5 {-0.20/26} (17. h3 $16 {0.81/24} Be6 18. Rae1) 17... Bxf5 $11 18. Rxf5 f6 19. d3 {-0.37/26} (19. a4 $11 {0.10/29 might be stronger.}) 19... Rae8 20. Raf1 {-0.66/29} (20. b4 $11 {-0.07/31}) 20... Ne5 $2 {1.22/27 [#]} (20... b6 $15 {-0.66/29 stays ahead.}) 21. Bxe5 { -0.23/28} (21. Bc5 $16 {1.22/27}) 21... Rxe5 22. Rxe5 fxe5 23. Rxf8+ {-0.77/32} (23. Re1 $11 {0.00/30 remains equal.}) 23... Kxf8 $16 {Endgame KP-KP} 24. Kf2 Ke7 25. Ke3 Ke6 26. d4 {-2.11/24} (26. g4 $17 {-0.72/27 might work better.}) 26... e4 $19 27. Kf4 h6 28. h4 $2 {-8.50/29} (28. Ke3 {-1.89/31}) 28... Kf6 29. g4 g5+ 30. hxg5+ {-10.48/27} (30. Kg3 $142 {-5.01/31} gxh4+ 31. Kxh4) 30... hxg5+ 31. Ke3 Ke6 32. c4 b6 33. a4 a6 $2 {0.00/34} (33... a5 $19 {-20.83/28} 34. Kd2 c5 35. cxd5+ Kxd5 36. dxc5 bxc5) 34. g3 $2 {-17.91/32} (34. a5 $11 { 0.00/34}) 34... b5 $2 {0.00/38} ({Better is} 34... a5 $19 {-17.91/32} 35. Kd2 c5 36. dxc5 bxc5 37. cxd5+ Kxd5) 35. axb5 $2 {-61.14/37} (35. c5 $11 {0.00/38}) 35... axb5 $2 {0.00/47} (35... cxb5 $19 {-61.14/37} 36. cxd5+ Kd6 37. Kxe4 a5) 36. cxb5 $2 {-61.05/45} (36. c5 $11 {0.00/47}) 36... cxb5 $2 {0.00/79} (36... Kd6 $19 {-61.05/45 aiming for ...c5.} 37. b4 Kc7) 37. b4 $11 {The position is equal.} Kd6 38. Kd2 Kc6 39. Ke3 Kd6 40. Kf2 Kc6 41. Kg2 Kd6 42. Kf1 Ke6 43. Ke1 Kd6 44. Kd1 Kc6 45. Kd2 Kd6 46. Kc2 Kc6 47. Kb3 Kd6 48. Kc3 Kc6 49. Kd2 { Accuracy: White = 32%, Black = 28%.} 1/2-1/2