A famous game between Legendary Grandmaster - Paul Morphy and Duke Karl - is when this checkmate first got its name. The combination involves a Rook + Bishop delivering a mate to the king - while the king is also blockaded from some escape squares by his own pieces. In the position below, this was the final set of moves played by Paul Morphy. He sacrifices his Queen on b8 so that the Rook could come to the d8 square with checkmate. This was one of the most notable games ever played in the history of Chess.