Originally posted by crazyblueYes, another example of zugzwang.
I think I found it after thinking about the first puzzle where the black piece got trapped.
1. Rc4 Rg5+ 2. Ke6 and now if Rxh5 then 3. h4 and black rook is trapped (and if black moves king then mate).
edit: one more thing has to be looked at. if black doesnt take the bishop and plays 2. .. Rc5 which attacks rook and prepares a stalemate then 3. Be2 and both white pieces are saved which should be a won endgame right?