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20. Kh1
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An interesting move, White wants to remove the tactical idea of Nf3 and carry on with Bd4 and f4, exchange my powerful Bishop and start advancing his d-pawn. |

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20... Qb4
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The problem with White's last is that it's too slow. Now after this simple double attack, I can force the White Rook of its active position, capture the e-pawn and thus weaken the d-pawn, forestall the plan with Bd4 and f4, all the while keeping my prospects of pushing the a-pawn. |

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21. Rc7
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There is no choice here. If 21. d6 then 21...a3 is very strong. Play could continue 22. Bxh6 (removing the Bishop from the dangerous diagonal) Bxh6 23. Rxe5 a2 24. Rb5 Qxe4 25. Bf3 (even this doesn't prove sufficient) Qc4 26. Bxa8 Rxa8 27. Rb1 (a sad necessity, the threat was Qxf1 followed by a1Q) bxa1Q 28. Qxb1 Qd4 29. Rd1 Bd2 and White's last hope, the d-pawn will fall and with him, the game. Playing for tricks with 21. Rxe5 Bxe5 22. Bxh6 again fails to 22...a3 and the passed pawn is just too powerful. White doesn't even have the chance to sacrifice the Bishop, he has to surrender a full Rook for it. White's move in the game is definitely best but it seems insufficient. |

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21... Qxe4
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I managed to win back a pawn and not give White anything in return. The central position of the Queen still hampers the plan with Bd4 and f4, for example if 22. Bd4 then 22...Rfd8 and the weakness of the d5 pawn is swiftly revealed. If White carries on with 23. f4 then Rxd5 calms his temper. |

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22. Qd2
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It seems White has given up hope of exchanging Bishops on d4 and instead would be content to just chase the Knight away. |

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22... a3
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One step closer. On a3 the pawn will be very safe, since it could be defended with Bf8 in case it comes under heavy fire. |

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23. f3
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My opponent must have been sick of the hyperactive Queen and decided that she must retreat to her side of the board. |

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23... Qf5
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Keeping the Queen in control of the White squares, namely d3 and c2, which could be invaded if White gets sloppy. |

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24. g4
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A committal move that perhaps wasn't necessary. Incidentally I have only one space to retreat the Queen but it's a very good square at that. |

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24... Qf6
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From b2 the Queen has taken quite a side-trip to f6, doubling on the long diagonal, preventing any attempt of a blockade on the a-file. 25. Bd4 still isn't possible because of Nxf3 and 25. f4 is refuted very nicely by 25...Nxg4 26. Bxg4 a2 27. d7 a1Q 28. Rxa1 Rxa1+ 29. Kg2 Rd8 30. d7 Qa6! |

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25. Qa2
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The Queen is the only piece than is available to stop the pawn advancing. My Bishop, Queen and Knight coordinate very nicely to stop White from redeploying his Bishops to the Q-side in order to blockade. |

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25... Qd6
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Keeping the active pace and not giving White time to regroup. Both Queens have now assumed the unworthy role of blockading the opponents passed pawn while defending their own. Quite an interesting arrangement. But because my pawn is a marginal one, that means that White's Queen is less active than my own. |

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26. Rc2
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No time for doubling Rooks since after 26. Rfc1 the simple Rab8, White is forced to give way, 27. R7c2 Rb2! 28. Rxb2 axb2 29. Rd1 (29. Qxb2 Nxg4) Rc8! and everything ties in nicely for Black, the passed pawn is the clear hero on the board. |

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26... Rfc8
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It's a good idea to exchange Rooks since that means there will be fewer pieces to cover the Queening square. |

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27. Rxc8+
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This feels rushed, better was the sturdier 27. Rcc1 and it will be much harder to break White's position. |

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27... Rxc8 28. Bc1
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Attacking the a-pawn but also retreating to the first rank. White's position is hard in any case and it's difficult to make a worthy suggestion. |

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28... Bf8
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The pawn is safe now and the two remaining pieces can be used to attempt a breakthrough the blockade. |

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29. f4
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White finally kicks the Knight from its central position but it weakens even more his King's position. |

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29... Nd7
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Again there is only one place to put the Knight but it's sufficient. Now the Knight can come to f6 to attack d5 and g4. |

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30. g5
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Taking away the f6 square for the Knight but the g-pawn might prove weak in the endgame. |

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