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18. f4
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White continues to expand on the kingside. This is a move i would hardly even consider, with such an open king white would be better to plan an escape route with possibly 18. Rfe8 allowing the bishop to move to f1-g2 and allowing the king to run across the back line in case black moves in behind the over extended pawns |

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18... Qh3
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A penetrating move by black, and whites position is starting to look very shaky. This could have been averted by the rook move as Bf1 drives away the queen. |

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19. Qe3
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Defending the g3 pawn |

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19... Rfe8
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A surprising slow move from black, I think 19...Nh5 opens a number of threats
1) 20. Nxg3, followed by a possible Qh1 causing some major problems
2) 20. exf4 Rxf4 (if gxf4 Qxe3) winning the exchange
3) 20. Qxg3 winning the pawn |

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20. f5
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Better would have been Rad1, looking to counter attack the centre against the flank attack. This pawn push however leaves white with a weak backward pawn on e4, which will prove costly. |

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20... cxd5
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The first of the exchanges, the backward e-pawn has to defend both d and f pawns which is impossible. |

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21. exd5
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taking the pawn back but leaving the f-pawn undefended. Better would have been fxg6 hoping to make the position rather messy and difficult to calculate, the played move is very easy to play against. |

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21... gxf5
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Wins the pawn, and threatens f4 winning another pawn. |

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22. Nb5
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A careless move, white gets distracted and attacks the queenside, overlooking the much greater threat to his kingside. A simple reatreat of the queen to f2 may have given him a fighting chance of defending. |

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22... f4
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The pawn cannot take the f-pawn as white will lose his queen, and black is now able to push the pawn through to g3 helping the queen set up checkmate threats. |

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23. Qf3 fxg3
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Black threatens the immediate Qh2# |

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24. Qg2
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Defending the threat |

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24... Qxh4
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Picking up an extra pawn, and keeps the queen lurking near the king. My instinct would be to trade queens and force a winning endgame, however black hopes for a checkmate before the endgame. |

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25. Nc7
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Winning the exchange, but leaving his king very vulnerable, black won't mind losing the exchange as he now has good winning chances. |

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25... Qd4+ 26. Kh1 Ne4
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A good plan, bringing in more pieces instead of just checking and moving the king around. The threat is Nf2 , setting up a discovered check |

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27. Nxe8
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Unable to block the threat white grabs the material, however it looks very bad for white even if he survives the coming attack black has passed pawns on the e and h files, so white will certainly lose an endgame. |

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27... Nf2+ 28. Kg1 Rxe8
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Another slow move from black, although he's still winning easily. Better would have been 28...Nh3 29. Kh1 Qh4, setting up a discovered check that will result in white losing his queen or being checkmated. |

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29. c3
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A final weak move from white, possible is Qf3, preventing the previously mentioned combination, but probably losing the exchange. |

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29... Nh3+
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Black plays the combination on the second chance |

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30. Kh1 Qh4 31. Qf3
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Another blunder giving black an easy checkmate, but anything else allows Nf4 winning the queen and inevitably the game. |

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