My poor Endgame

My poor Endgame

Avatar of Hockey07
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Hi friends.. This game is about my poor endgame.. I lost my Queen and later my opponent too lost his Q.. But I made a mistake at some point. I dont know where i did mistake.. I will post that game here.. Please specify me where was the mistake..  From my point of view I took one pawn in b4(46th step).. May be that was a big mistake...