Simple checkmate puzzle in 4 moves


can't 4. ...Kh7 be played here? and before that, I would have played 3. ...Rxg8 as well. Correct me if I'm wrong, suffering from chess blindness atm.

I had a small eureka moment. When I realized that when I played Rg8+. The king is in check from both the rook and the bishop meaning the king has to move.