fun puzzle taken from one of my games try to guess the continuation (ill check back in on this tomorrow.
Hard puzzle


Rxg4!?
but i think white could play 3. Qg5
Can't you block with the rook? or am I missing something?

The white rook on f5 can only move with check or to defend the g pawn until either white's queen or other rook has moved, otherwise it's forced mate.