Peter S. Krug (Аustria)  
#17 6+4

1.a6! 1.c7? Nf5+! 2.Bxf5 Ne4+ 3.Kf4 Nd6 4.a6 Nc8= (4...Ne8? 5.c8N?)   1...Nf5+ 2.Kf2 Ne6 3.Bxe6 3.a7? Nc7 4.Bxf5 Na8=   3...Nd6 4.a7 Nc8! 4...Ne8? 5.a8N Nc7 6.Nb6 Nxe6 7.Kg3 mate in 15 moves   5.a8N! Ne7/a7 5...Nb6? 6.Nc7 Nd5 7.Nb5 mate in 15 moves   6.c7 Nc8 7.Ke3! Nb6 8.Kd4! Nc8 9.Bg8! Nb6 10.c8Q/R/N Nxc8 11.Nc7 Nd6! 11...Ne7? 12.Ne6 Nxg6 13.Nd8 Ne5 14.Kxe5 mate in 16 moves   12.Ne6 Ne4 13.Nd8 Ng5 14.Nf7+ Nxf7 15.gxf7 g6 16.f8Q g5 17.Qf6#