Epaullette's Mate:

This checkmate is somewhat similar to the Fish Tail mate. This occurs when two parallel retreat squares for a checked king are occupied by its own pieces, preventing the escape. In this example, white sacrifices his Rook on e6 to allow the queen to come into e6 and deliver checkmate. Black's best move would have been to not accept the Rook sacrifices and instead stop the check by moving his king to d7