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16... Qc6
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Here Black does the same thing: the BQ is no longer threatened and White's e-pawn is now hanging. |

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17. Qe2
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Probably 17.Qc2 was better, but the text shows that the WQ is headed for e3, to provide support for the f-pawn. |

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17... Bg4
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Of course. |

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18. Qe3 Nd7
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Threatening the Bb6 as well as a possible ...f5, as well as setting up a rather complex combination. What started out as a somewhat flavorless game is only going to get more twisted from here on out. |

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19. Rac1
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White lines up on the c-file with the BQ, getting his Rook out of the corner, and inviting Black's next move, for better or for worse... |

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19... exf4
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Black tears the game wide open. Now White either sacrifices the integrity of his kingside even further with 20.gxf4, or accepts an isolated d-pawn and the loss of an exchange by retaking some other way. Take a broad look at the position here: White has a definite spatial advantage but Black should have decent counterplay against the White King. Remember this feeling for a few moves. |

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20. Rxf4
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??! I looked at this move for a long time trying to work out all the variations, and then decided to simply go for it. Take a few minutes reviewing this position: White is sacrificing material for positional gains, in theory, but the situation is very complex. The main things to notice are: Black has a three-piece shishkabob lined up for him along the c1-g5 diagonal; White has a discovered attack ready to go against the Black Queen, and Black's LSB is unguarded. What happens now? |

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20... Bg5
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I actually think 20...Bh5 was better. Since White has three major pieces on the vulnerable diagonal, Black can win an exchange even if he plays ...Bg5 a move later. So, he might as well get his LSB to safety. |

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21. e5
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White unleashes an attack on the BQ. Note that Black could delay his response to it with 21...Bxf4 22.Qxf4 Qc8, since White would be unwise to attempt to double-down: 21...Bxf4 22.Bxc6?? Bxe3 23.Bxb7 Bxc1 24.Bxa8 Rxa8 25.exd6 leaves White with far too little for his material. |

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21... Qc8
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The only safe square! Suddenly b7 looks vulnerable, and d6 is undefended. |

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22. exd6
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White ties up a loose end and gives himself a powerful pawn spike in Black's territory. |

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22... Re8
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! Gaining a tempo to reposition the Rook. |

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23. Qd4
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White's Queen must not stop defending f4. |

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23... Bxf4 24. Qxf4
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Remember how you felt a few moves ago, that White had a small spatial advantage but Black should have counterplay? Compare that with the position now. White has only a Bishop and a pawn for his Rook, but his positional advantages are now huge. |

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24... Ne5
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Black brings his Knight up to a more useful position and defends his LSB--guarding the critical d1 square. Of course ...Nxb6 wouldn't get anything useful done, since it just invites White to fork the Black Queen and Rook. |

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25. Bd5
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White can't get his Rook on the d-file easily, so he picks an easier target: f7. First he pins the pawn so it can't escape. |

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25... Bh5 26. Rf1
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Not yet an overwhelming attack, but White is keeping the initiative by forcing Black to defend himself. |

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26... Qg4
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!? I think this might be Black's best shot in the position. White has a massive attack rolling down the board, spearheaded by the passed d-pawn. A Queen exchange could lessen Black's defensive burdens. However, he does give up another pawn, making White's center that much stronger... |

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27. Bxb7
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! Of course there's no reason to take the Queen right away. |

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27... Rab8
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The only safe square! |

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