E32 Nimzo-Indian: Classical (4.Qc2): 4...0-0 (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3)

There are over 70 different opening variations featured in this blog already and there still might be more. Every day I keep finding new ones. It has been interesting to go through my old games and see that I have played a lot different stuff over the years that I have mostly forgotten. I still feel that I play mostly the same nonsense over and over again even though there is clear evidence that it is not completely true. Then again it may be my opponents who are the reason for all the different lines, I would play the same thing always if my opponents would do the same.

[Event "Let's Play!"] [Site "Chess.com"] [Date "2014.05.18"] [Round "?"] [White "muco23"] [Black "Vierjoki, Timo"] [Result "1-0"] [ECO "E32"] [WhiteElo "1910"] [BlackElo "1805"] [Annotator "Tactical Analysis 2.10 (5s), TV"] [PlyCount "63"] [EventDate "2014.??.??"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 {E32 Nimzo-Indian Defense: Classical Variation} O-O 5. a3 {E32 Nimzo-Indian: Classical (4.Qc2): 4...0-0} Be7 $2 { 1.14/18 [#]} (5... Bxc3+ $1 $15 {-0.45/20} 6. bxc3 d6) 6. e4 d6 7. Bd3 {0.52/23 } (7. Nf3 $16 {1.37/20} Nc6 8. Be2 a6 9. d5 exd5 10. cxd5 Ne5 11. O-O Nfd7 12. Nd4 Re8 13. Be3 Nb6 14. Rad1 Bg5 15. Bxg5 {1-0 (15) Lalic,B (2491)-Mudrak,J (2377) Tabor 2010}) 7... e5 $14 (7... Nbd7 8. Nf3 h6 9. O-O a6 10. b4 b6 11. h3 Bb7 12. Bf4 c5 13. dxc5 bxc5 14. Rfd1 Rc8 15. Rab1 cxb4 16. axb4 e5 17. Be3 g5 18. Nd2 Qc7 19. Qb3 Nh5 20. Ne2 Nf4 21. Ng3 Kh7 22. Nf5 {Urh,Z (2066) -Hewawasam,H (1686) Porto Carras 2018 1-0 (59)}) 8. d5 {0.41/21} (8. Nge2 $16 { 0.86/18}) 8... a5 {0.89/19} (8... Nh5 $14 {0.41/21 is more appropriate.}) 9. Nge2 $146 {0.26/22} (9. Be2 $16 {0.89/19}) (9. b3 Nbd7 10. Nge2 Nc5 11. Be3 Nxd3+ 12. Qxd3 Ng4 13. O-O f5 14. f3 Nxe3 15. Qxe3 f4 16. Qd2 Kh8 17. Kh1 Bg5 18. Ng1 Bh4 19. Nh3 Bd7 20. Qe2 Rf6 21. Rg1 Rh6 22. Nf2 Bg3 23. h3 Qh4 { Nunes,J (2235)-Morais,V (2058) Almada 2007 0-1 (32)}) 9... Nbd7 {0.87/23} (9... Nh5 $11 {0.26/22}) 10. O-O {0.05/23} ({Better is} 10. Na4 $16 {0.87/23}) 10... Nc5 {0.75/21} (10... Nh5 $11 {0.05/23}) 11. f3 {-0.27/23} (11. Be3 $16 {0.75/21 }) 11... Bd7 {0.83/23} (11... Nfd7 $11 {-0.27/23}) 12. b4 $2 {-2.62/20} (12. Be3 $16 {0.83/23}) 12... axb4 $19 13. Nb5 $2 {-5.01/17} (13. Nd1 {-2.15/23 was called for.}) 13... bxa3 $2 {-1.10/25} (13... c6 $19 {-5.01/17} 14. axb4 Nxd3 15. Rxa8 Qxa8 16. Qxd3 cxb5) 14. Bxa3 $17 Nxd3 {-0.97/21} (14... Bxb5 $142 { -1.59/21} 15. Bxc5 dxc5 16. cxb5 Qd6) 15. Qxd3 Ra6 {-0.92/21} (15... Nh5 $142 { -1.38/21} 16. g4 Bxb5 17. cxb5 Nf6) 16. Nbc3 {-1.65/21} (16. Rfb1 $17 {-0.92/ 21 was worth a try.}) 16... Qa8 17. Bb2 Qa7+ {-1.14/22} (17... Rc8 $19 { -1.65/20} 18. Kh1 c6) 18. Kh1 Qb6 {-0.72/22} (18... Rb8 $142 {-1.50/19} 19. Rfb1 h5) 19. Rxa6 {-1.24/23} (19. Rab1 $142 {-0.72/22}) 19... bxa6 ({Don't take } 19... Qxa6 20. Ra1 $11) 20. Bc1 {-1.36/22} ({White should try} 20. Rb1 { -0.94/25}) 20... Ra8 {-0.62/24} (20... c6 $17 {-1.36/22} 21. Be3 Qc7) 21. Be3 $15 Qb7 22. g4 {-1.50/21} (22. Kg1 $15 {-0.65/22}) 22... a5 {-1.03/23} (22... Qc8 $142 {-1.50/21} 23. Ra1 a5) 23. Ng3 a4 24. Ra1 {-1.51/19} (24. Kg2 $142 { -1.00/21}) 24... Qb3 $2 {1.17/24} (24... Qb8 $17 {-1.51/19} 25. Nb5 g6) 25. Rb1 {White has strong compensation.} Qa3 26. g5 $36 {White fights for an advantage. } Ne8 27. Qc2 $1 f6 {1.50/24} (27... Bd8 $14 {0.53/24}) 28. Nf5 $16 Bd8 { 2.07/20} (28... Bf8 $16 {1.07/24}) 29. Rb2 {0.75/24} (29. Kg2 $18 {2.07/20 has better winning chances.}) 29... Qa1+ $2 {5.84/21} ({Don't blunder} 29... fxg5 $2 30. Nb1 $18) (29... Bxf5 $16 {0.75/24} 30. exf5 fxg5) 30. Bc1 $18 {White is clearly winning.} ({Less strong is} 30. Rb1 Qa3 $14) 30... Qa3 {[#] Threatens to win with ...Qc5.} 31. Rb5 $1 Qa1 32. Rb1 {Accuracy: White = 17%, Black = 11%.} 1-0