My opponent gave up and let the clock run out (poor form in my book, resign if you quit, don't waste 5 minutes of my time for nothing), but this was a nice trap I had waiting...

If white plays Bd2 to drive out blacks Rook and connect his own rooks, black has a nice surprise in store:

First time posting, hope I did it right!

Good puzzle. With correct play, black can avoid the mate. You have mate a move faster with 26...Qxg2#

RyanMK you are exactly right! I fixed it...

great trap

Woah nice one there! I love mates in which you sac pieces but get a checkmate. It feels impressive!