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1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nc3 Bb4 5. Bd2
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A trade off between aggression and defence. The pin is broken but there is not any immediate pressure being placed against black's king side. |

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5... d6 6. h3
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Restricting Black's light square bishop and making the way clear for Nf3. |

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6... Be6
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Protecting the bishop's pawn and threatening an exchange which will double white pawns and thus weaken the King's pawn.
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7. a3 Ba5 8. b4 Bb6
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This is a questionable maneuver, the black bishop has been driven to a more useful diagonal by a pawn charge which has no sustainable attack. |

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9. Nf3 Nd4 10. O-O O-O 11. Bg5 c6
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It would appear that black is preparing to launch an attack aimed as disrupting white’s central pawn structure |

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12. Nxd4
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? |

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12... Bxd4
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Forces white to tie up either the queen or the bishop or lose material |

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13. Qd2 d5 14. exd5 cxd5 15. Bb3 Qd7
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Black now has a very strong king side attack whilst white’s queen is tied to the knight and cannot assist in the defence. |

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16. Bxf6
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White has given the only active piece on the king side and allowed black to half open the file in front of the white king. |

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16... gxf6 17. Rae1
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?
In breaking the knight pin white has trapped his king’s rook
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17... Bxh3 18. gxh3 Qxh3 19. Ne2 Kh8 20. Ng3 Qxg3+ 21. Kh1 Qh3+ 22. Kg1 Rfg8+ 23. Qg5 Rxg5#
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