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18... Nxb7 
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the only way . | 
   
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19. Bf4 
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another good move , the retreat of the black Queen to a8 any way will lead to her doom, after 20.Qa5! threating invantible mate on c7.20...Qb8 forced.21.Bxb8-Kxb8 and white will have easy win . | 
   
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19... c5 
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black doesnt give up! , another good move ,blacks LSB attacking the white queen on a4 and if 21.Qb3?-Be6 threating mate on d1 and attacking Qb3, and if 21.Qa5?-Qxf4! and white lost , i realised that black wants me to reatret my A file whitch will probebly finish my attack . i found another way to keep the strong attack ,(i dont have a time to passive moves ,) | 
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20. Qe4 
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maybe the wining move , now  my queen is out from danger ,and i am avoiding moves  like Bc6 or Be6  because deadly attack on c6, and if the black retreats to a8(with his queen)after.20.Qe4black wont be able to stop the mate on c7. the idea is to move my Queen to a square  which defend my DSB on f4, attack c6 square if the black LSB will move, and i will have the option to attack c7 from Qe5 after the retreat of the black queen . | 
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20... Rhe8 
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black see the the threat and  and attacks again my queen . | 
   
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21. Qd5 
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but now its too late for black , Black stiil cant move his LSB , if .21...Ba4.22.Qxd8+-Rxd8.23.Rxd8+-Kxd8.24.Bxb8 and black without material and will lose . and if 21...Be6??.22.Qc6+-Qc7.23.Qxc7#. white all so threats 22.Qxc5+ -Bc6.23.Qxc6+-Qc7.24.Qxc7#. | 
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21... Re6 
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if 21...Qa8??.22.Qxc5+-Bc6.23.Qxc6#.  black wishes to break the pine on b7 and a void some how the mate threat , 22.Qxc5+-Rc6! and black can be saved , however after the last black move , i had no attentions to capture the c5 pawn , and i simply won his queen . its falls to say that 22...Re6 was a blunder , the whites attack was to heavy , and i must admit heroic defense by the black , well done !! | 
   
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22. Bxb8 Rxa6 23. Qe5 
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and black resigns , the activity of the white queen is to much for black , thank you and i hope you enjoyed the game . | 
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