Okz, never played that Horace Goes Skiing :) Anyway, ingame image does not help too: http://www.worldofspectrum.org/infoseekid.cgi?id=0002351&loadpics=3
Seems there is some other inside.
Anyway, WoS forums restored (finally some person understood how to delete a cache), so you can remove this :) Or do a duplicate on WoS, why not.