Hugo Rohr (16-09-1865 - 09-12-1937) German composer
Hugo Rohr was specialized in selfmates. He composed more than 1300 problems, of which 600 were published.
This one is a particularly good specimen:
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1...b5-b4 2.Ke3-e4 ~ 3.Ra2-a1+ Kf1-e2 4.Qh3-g4+ Rg2xg4#Battery mates. The variation 1...b5xc4 is especially subtle, as the black royal battery is built during play.
1...b5xc4 2.Bh4-f2 a4-a3 3.Ke3-d2 Kf1xf2 4.Qh3-f3+ Kf2xf3#