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17. Qe2
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defending e4 and anticipating a possible b5-b4 when after the exchange the queen can take advantage of the light square weakness. For example 17. ...b4 18. cxb4 c4 19. Qc4! Qxc4 20. bxc4 is objectively better for white. |
 
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17... Bd7
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countering white's idea of taking control of the light squares on the queen side |
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18. Ng3
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I am thinking that 18. ...Nxg3 19. fxg3 would give me good pressure along the f-file and more room to maneuver on the king side. However, the trade off is that e3 and e4 are weakened. This is a fact that black does try to exploit |
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18... Nxg3
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I think 18. ...Nf4 has to be seriously looked as an improvement. The exchange has the advantage of weakening e4. |
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19. fxg3 c4
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Black decided to play c5-c4 but it does come at a price. With the DSB sitting on f8 it will be hard to hold off an invasion along the dark squares. Also a negative is that the bishop on e3 has great influence now. Therefore, 19. ...Be7 20. Qf2 Qa5 attacking c3 has to be recommended. |
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20. bxc4 Rec8
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typical thematic move in the chirgion defense. Black puts all resources on to the c-file. Of course black has very little chance of any serious counter play if he can not win the c3 pawn. |
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21. Nd2
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Defending c4 and wanting to play Nb3 |
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21... Qa5
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attacking c3 and there is no real good way to defend it. If white plays 22. Rec1 Qxc3 23. a4 Qb2 24. Rab1 Qa3 and the queen escapes with the pawn. Another problem for white after ...Qxc3 is the e3 weakness. But from white's perspective after ...Qxc3 the black queen can get trapped under the right conditions. Therefore taking on c3 for black is risky. |
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22. a4
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! now Qxc3 does not work because white is one step ahead of the game. Here the Gameknot engine says this is a mistake and offers 22. cxb5 Rxc3 23. bxa6 Qxa6 24. Qxa6 Rxa6 25. Bd1 Ra8 26. a4 Be7 27. Ra2 Bf6
28. Kh1 Nc5 29. a5 Kg7 as better. |
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22... Qxc3
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I think this is a big mistake I think what the gameknot engine offers was the best 22. ...bxa4 |
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23. Rec1 Qb2
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forced or the queen is trapped |
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24. Rab1 Qa3
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again forced |
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25. Kf2
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!! subtle but wins everything else leads to equality but is wildly complicated. The point is that black's only escape route for the queen is the exchange on e3. Now e3 is supported by the king which frees the queen for active duty. Now ironically the Gameknot engine see this as a big mistake and gives 25. Ra1 Qb2 26. Rab1 Qa3 etc as the best line. In other word the engine says the game is a draw. |
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25... Nc5
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Before this move the gameknot engine says the position is roughly level with a score of -0.57 |
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26. cxb5
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and now it says it is + 1.77 winning advantage for white. so I do not think it understands the value of 25. Kf2 |
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26... axb5 27. axb5
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a strong advanced pawn that is well supported. As a result black has to force exchanges to weaken it |
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27... Qc3
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x-raying the rook on c1 |
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28. Kg1
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avoiding black's idea of Nd3 forking the king and rook
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28... Bxb5 29. Rxb5 Nd3 30. Bxd3
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Now 30. Qxd3? Qxd3 31. Bxd3 Rxc1+ 32. Kf2 is more than likely a draw since black can keep the center static by defending d6. However, after the game move the d6-pawn will fall ensuring a powerful white d-pawn |
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30... Qxc1+
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Black finally manages to secure the c-file but he has lost the centre |
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