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1. d4 Nf6 2. h3
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White probably wants to steer away from opening preparation. |

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2... b6
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Good diagonal for the light bishop. Especially if White doesnt fianchetto his. |

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3. c4 Bb7 4. Nc3 e6 5. Bg5
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Moving the bishop here might lead to either trading it for the knight or wasting tempos moving the bishop from pawn attack by h6 and g5. Worst situation is that the bishop might get shut off from the fight after black plays d6. |

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5... Bb4 6. Qc2 h6
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putting the question to the bishop's motif |

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7. Bh4 g5 8. Bg3 Ne4
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the bishop pin at c3 is rather annoying for white, especially since his dark bishop strayed to the king side already and theres no other pieces to protect nc3 other than his queen. |

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9. Be5 Rg8
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my kingside is weaken by earlier pawn advances (white's bishop might be termed the provoker) so theres no point in castling there. i just need to protect vital squares on that side while developing and safeguarding my king on the queenside. black is good since white hasnt developed his king side at all (he will have to castle there since his queen side structure is surely crippled after a trade at c3.) |

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10. f3
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annoyed by the pin, but further crippling his pawn structure while neglecting development. |

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10... Bxc3+ 11. bxc3 Nf6 12. e4
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white seems to have a strong center and the bishop pair (typical in d4 variations with bb4) but he's behind in development and his pawns might turn out to halt the scope of his own bishops (note white's light bishop) instead of aiding it. but black needs to blockade white's pawns for this to work. |

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12... d6 13. Bh2
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too proud to trade his bishop for a knight. but this turns out to be one of the main point of the match. when the position is blockaded, my knight will be a far more powerful piece than his blinded bishop. |

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13... Nbd7 14. Bd3 e5
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and white's bishops are blocked in. the dark bishop is obstructed by my pawns chain at d6 and e5 while his light bishop is shut in by his own pawns at e4 and c4. |

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15. Ne2 Nh5 16. g3 c5
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further blockade of the center. |

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17. d5
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playing into my hand. his light bishop AND his dark bishop are becoming big pawns. my light bishop is actually not that bad since i can reactivate it on another diagonal. |

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17... Qf6 18. Rf1
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forfeiting kingside castle. he will leave his king in the center since its so solidly blockaded. but his heavy pieces are not connecting well. |

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18... O-O-O
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my king is safe here for the rest of the game. cant say the same for his. |

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19. a4
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futile attempt to breach the castle wall. |

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19... a5
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white has no play against my king because the only possible weakness is the b file (can be attacked with 2 heavy pieces) which is covered by my knight. meanwhile. i can maneuver all my pieces to crack open his king side and get to his king. |

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20. Qb2 Kc7
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just in case |

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21. Rb1 Qg6
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maneuvering sequence. |

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22. Nc1
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white pieces have no targets and squares to attack from. |

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22... Ng7 23. Nb3
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try to get sneaky with na5 and qb7. |

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