The first step in this position, is putting your king in one of the corners. Your queens have to be next to your king, but on the differently-colored squares than your king. The opponent's king will follow and will end up next to your king, on a same-colored square.1Kf3+Kf42Kg2Kg33Kh1+Kh24Qg1Kg25Qhh2...Now the king has one square to go to, and you can checkmate it with your queens.5...Kf36Qgg2+Ke37Qe4#