Blundered but took back

Tonight I played in an online chess tournament and had the game under control till I blundered my queen, but I still have a Never Say Die attitude from last year, so I kept playing trying to get my opponent to blunder their queen and luckily with some nice moves I was able to capture it with my knight that was persistently attacking black's queen and won my queen back when I promoted a pawn for one that led to checkmate, and what a good game it was!