Peter S. Krug (Аustria)
 
#15 3+4

1.Kh3! 1.Qd5? Qf2 2.Kh3 Qb2/c2   1...Qf1 2.Qd5! 2.Qe4? Qe2! 3.Qxe2 g1N+! 4.Rxg1+ hxg1N+   2...Qe2 3.Ra3! 3.Rc3? Kg1 4.Rc1+ Kf2 5.Qxg2+ Ke3 6.Qg5+ Kd4 mate in 17 moves    3...Kg1 4.Ra1+ Kf2 5.Qxg2+ 5.Kxh2? Qe4!! 6.Qf7+ Ke2 7.Ra2+ Kd3 8.Qb3+ Kd4 9.Ra4+ Ke5 10.Qb8+ Kf5 11.Qf8+ Ke5 mate in 17 moves   5...Ke3 6.Qg5+ Kd3! not 6...Kd4 7.Ra4+ Kd3 (7...Kc3 8.Qc5+ Kd2 9.Qb4+) 8.Qb5+ Kd2 9.Qb4+ Kd1 10.Ra1+ Kc2 11.Ra2+ Kd3 12.Ra3+ Kc2 13.Qc3+ Kd1 14.Ra1#   7.Qd5+! 7.Qb5+? Kd2 8.Ra2+ Kc3! 9.Ra3+ Kd4! 10.Ra4+ Ke3 11.Qe5+ Kd2 12.Ra2+ Kd3 13.Ra3+ Kc4 14.Rc3+ Kb4 15.Qc5+ Ka4 16.Ra3#   7...Kc3 not 7...Kc2? 8.Ra2+ Kc3 9.Rxe2 h1Q+ 10.Qxh1 Kd4 11.Qd1+ Kc4 12.Rc2+ Kb5 13.Qb1+ Ka5 14.Ra2#    8.Ra3+ Kb4 9.Qd6+ ….   9...Kb5 10.Rb3+ Kc4 11.Rb4+ Kc3 12.Qd4+ Kc2 13.Rb2+ Kc1 14.Qc3+ Kd1 15.Rb1#   9...Kc4 10.Ra4 Kc3 11.Qb4 Kc2 12.Ra2+ Kd3 13.Ra3+ Kc2 14.Qc3+ Kd1/b1 15.Ra1#