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35... a5
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Until white moves his pawns further black is pursuing promotion as far from the enemy king as possible. |

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36. h5
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Here comes white's attempt. |

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36... Nd6
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and black's knight is moved into position to block. This also threatens white's bishop. |

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37. Bg2
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If instead of the bishop fleeing, 37 p-g5 then 37 .... Nxe4 38 p-h6 then 38 ... pxh6 39 pxh6 N-f6 still prevents the pawn promoting. If 38 p-g6 then 38 ... K-e8 39 p-h6 pxh6 40 p-h7 K-f2 and black's pawn promotion fails again. |

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37... a4 38. g5
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white now moves forward. |

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38... Nf7
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Black's Knight is moved into position for defense. |

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39. g6 Nh6
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Pawns are easily blocked and with white's bishop on white squares unless his king can attack the pawn on g7 he is powerless. |

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40. f3
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? White should have moved his King to attempt to prevent the pawn promotion. If he can get his king into the square formed by a4, a1, d1 and d4 then he can stop the a4 pawn promotion (except for interference from black's knight and other pawn. Alternatively B-h3 then to e6 may stop the advance temporarily. |

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40... a3
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Promotion is now inevitable. |

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41. Bh3
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White sees a chance to use his bishop for defense but it will arrive one move too late. |

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41... a2 42. Be6 a1=Q
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and the pawn is promoted to a queen. |

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43. Kf2 Nd3+ 44. Kg2 Qb2+ 45. Kh3
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white continues to retreat |

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45... Nf2+ 46. Kh4 Qe2 47. Kg5
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White's king is now heading towards a trap - it can't retreat any further. |

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47... Nh3+
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?? in an attempt to force an end to the game black makes a mistake. |

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48. Bxh3 Qxf3
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Black's capture of the pawn is just an easy way to get to g3 - a mating square. |

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49. Kh4
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white attempts to protect his bishop with his king but it is too late. |

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49... Qg3#
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game over. I hope you enjoyed this annotated game. |

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