The rook is a very powerful piece to deliver checkmate. Tinue is analogous to checkmate in chess. Doc notices something is amiss when George quickly achieves a checkmate in their chess game. Two (queens or rooks) can easily checkmate on the edge of the board. In order to counter this strategic "checkmate" Tito prepared an elaborate deception. It did, however, checkmate the opponent every time. It works by using the bishop and queen to checkmate the king. The Kill Box mate is a box-shaped checkmate. White is to play and checkmate in one move. The second diagram shows final position after checkmate. If Black does not checkmate White within 50 moves, he loses. A team must have one checkmate to win. The diagram shows an example checkmate position. She played Barbara Simmons in four 1961 episodes of the CBS detective series "Checkmate". Commando took part in a raid on German shipping near Haugesund code named Operation Checkmate.