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11. gxf3
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Doubled pawn - not ideal but at least threatens the bishop so I can take back the initiative |

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11... Bd7
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Retreat - I have doubled pawns but much better development |

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12. O-O-O
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Finally I castle which gets the rook down the centre. I going to ramble a little here. My understanding of opening theory is to develop pieces, control the centre of the board, keep pieces protected and gain space. Apart from my doubled pawn I am in a better position on all fronts. I am expecting black to play Nf6 and maybe g6 followed by Bg7 to free it up. I was again wrong... |

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12... b5
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Black opts for a pawn charge on my castled position. No urgent problems for white so development continues |

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13. Rg1
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Control the g file |

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13... b4
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It really is a pawn charge - time for some knight activity |

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14. Nd5
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Threatening the b4 pawn |

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14... e6
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threatening the knight |

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15. Nxb4
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remove the pawn - pawn charge neutralised and a6 pawn under threat |

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15... a5
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Sensible response - more knight hopping required |

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16. Na6
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Only option available - this is where having control of the board comes in as both the queen and the bishop are protecting it and there was nowhere else to go |

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16... Qb6
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Still enough protection for the knight (and nowhere else for it to go so.....) |

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17. Rg5
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Bring out the rook to put further pressure on the queens side. I now have every major piece aimed into the queens side except the rook at d1 which is straight down the middle. Conversely, black still has not moved a single piece on the kingside |

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17... e5
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To cut off the rook but black didn't see what was coming |

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18. Rxe5+
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Rook sacrifice for a pawn - check! A killer blow although it may have appeared a blunder. I'm now looking at dxe5 and then Bxa5 which means my queen supported by the rook have a clean run at the black bishop on d7 and mate if it is not protected |

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18... dxe5
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The obvious response and I don't think it would have made any difference if something else had been played at this stage |

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19. Bxa5
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Threatening Qxd7 mate if the queen removes the bishop |

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19... Qh6+
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A short reprieve |

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20. Kb1
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a simple sidestep and then back to the action - note the black kingside is still in place |

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20... Ra7
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Protects the bishop and therefore mate |

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