1st Prize, Oesterreichische Schachzeitung, 1958
Mate in 5
A problem by one of the many fine more-move composers produced by Austria.
A problem which may prove difficult to solve despite the light setting. The whole white plan must be visualised, since it does not depend on any specific black sequence. The key is 1.Kb2, placing the king on the second rank, from which White can cope with a rook check when the queen unpins. It avoids a check from b3 or d3, which would not be the case after 1.Kc2 or 1.Kd2. There follows 1...b5 (or others) 2.Rf5 (had White played 1.Rf5? c5! would have defeated 2.K any) 2...b4 3.Qh2+ Rh3 4.Qe5 threatening 5.Rh5, leaving Black with a choice of 4...Rh2+ 5.Qxh2 or 4...g3 5.Q or R mates. The manœuvre in which a weaker piece makes an anticritical move after which a stronger piece supports it from the rear is known as Loyd-Zepler doubling.