In 1939, Ladislav Prokeš composed a study, which illustrated the Prokeš maneuver for the first time. The solution begins 1.Kg4 e2 2.Rc1+ Kd4 3.Kf3 d2 and Black threatens to promote a pawn. But White forces the draw with 4.Rc4+! Kd3 5.Rd4+! Kxd4 6.Kxe2 Kc3 7.Kd1 Kd3 stalemate. The idea is that, by vacating the c1 square on the fourth move, White's rook prevents Black's pawn from capturing on c1. The White king is then able to reach d1, stopping the pawn.