1.Bf8 Ke5 2.Be7 Kf5 3.Bg5 Ke6

( 3... Ke5 4.Bg6 Ke6 5.Sf4+ Ke5 6.Sh5 Ke6 7.Bh6 Ke5 8.Bg7+ Ke6 9.Sf4#)

4.Bg6 Ke5 5.Be7 Ke6 6.Sf4+ Ke5 7.Sh5 Ke6 8.Bf8 Ke5 9.Bg7+ Ke6 10.Sf4#

1... Kf6 2.Bh6 Ke5

(2... Kf5 3.Bg5 Ke6 4.Bg6 Ke5 5.Be7 Ke6 6.Sf4+ Ke5 7.Sh5 Ke6 8.Bf8 Ke5 9.Bg7+ Ke6 10.Sf4#)

3.Bg6 Ke6 4.Bg5 Ke5 5.Be7 Ke6 6.Sf4+ Ke5 7.Sh5 Ke6 8.Bf8 Ke5 9.Bg7+ Ke6 10.Sf4#

(3... Kf6 4.Sf4 Ke5 5.Sh5 Ke6 6.Bf8 Ke5 7.Bg7 Ke6 8.Sf4#; 3... Ke5 4.Bg6 Ke6 5.Sf4+ Ke5 6.Sh5 Ke6 7.Bh6 Ke5 8.Bg7+ Ke6 9.Sf4# )

Rundlauf (Roundtrip) of the bishop g7 clockwise and counter clockwise .