1.f6-f7! …   (1.a6? Kg8 2.a7 Bc6
3.Kg6 Be4+ 4.Kg5 g2 =)
1….     Be8:f7  2.a5-a6 g3-g2!
3.a6-a7 g2-g1Q  4.a7-a8Q+ Bf7-g8
(4…. Qg8 5.Qa1+ +/-)
5.Qa8-a1+! …  (5.Sg6+? Q:g6 6.K:g6 stalemate)
5…. Qg1:a1   6.Sf4-g6x!
2…. Bf7-e8  3.a6-a7 Be8-c6
4.Sf4-g6+! Kh8-g8 5.Sg6-e7+  Kg8-f7
6.Se7:c6   g3-g2  7.Sc6-e5+! K:f7-e6
8.Se5-f3 +/- (Author)