The Castle Sharp X1 Screenshot

Game: The Castle
System: Sharp X1
Castle, The Sharp X1 Screenshot: Do I go for the green key, or use the green door here?
Do I go for the green key, or use the green door here?
There are 5 screenshot groups on file for The Castle:
MSX
PC-6000 Series
PC-8800 Series
Sega SG-1000
Sharp X1