Selfmate problems

(1) Hasselkus,E - s#7 Schach-Express, 1948 1.g8R+ [1.g8Q+ Kf6 2.Qg7+ Ke6 3.e8Q+ Kd6 4.d8R+ Kxc7 5.Qd7+ Kb6 6.b8R+ Ka6 7.Qa7+ Qxa7# ] 1...Kf6 2.f8R+ Ke6 3.e8R+ Kd6 4.d8R+ [4.d8Q+ Kc6 5.Qd7+ Kb6 6.b8Q+ Ka6 7.Qa7+ Qxa7# ] 4...Kc6 5.c8R+ Kb6 6.b8R+ Ka6 7.Ra7+ Qxa7# 0-1

(2) Lindgren,Bo - h#10 Feenschach 1966, 2.p, 1966 1.a8R+ Na7 2.Rxa7+ Kb5 3.b8R+ Kc6 4.c8R+ Kd6 5.d8R+ Kxe6 6.Rc6+ Rxc6 7.e8R+ Kxf6 8.f8R+ Kg6 9.g8R+ Kxh6 10.h8R+ Bh7# *