Blunder!

Tonight I played someone in an online chess tournament, and won with some nice moves since white decided to castle to avoid my queen instead of moving white's queen that my bishop captured on the next move, but it wasn't long till white blundered again, and then resigned.

I give white credit for not resigning when he blundered his queen, even if the endgame seemed obvious then, but you should never blunder your queen because your opponent will take advantage of that, and you'll have a shorter game that doesn't last any longer than it takes your opponent to checkmate you, and its game over!