Cube Generator solution

The Cube Generator in Ultima VII involves navigating a maze where the Avatar has to create bridges (and inevitably also destroys them), evade traps and figure out how to bypass invisible walls. Bridges are created or destroyed when the Avatar passes over spots marked for that purpose. Fire fields also erupt when walking over them. Fireball shooters are scattered over the map and are not marked on it (they become obvious soon enough). All numbers in the text reference to the picture below.

The Solution

Start in this Column (Steps 1 - 15)		Continue in this Column (Steps 16 - 30)
Create 1 then cross it		Cross 14, only to suddenly land in fire fields!
Create 4 and 3 (destroys 1)		Quickly go east then onto 21 to create 13 and 15 while destroying 19
Cross 3		Brave the fire fields again to cross 14
Create 5 and 22		Cross 15
Cross 3 again and cross 5		Create 20
Create 7 and 10		Cross 13 then 20
Cross 7 destroying 5 and 7		Create 11 and 16 destroying 20
Create 17 (herein beware of fireball shooters!)		Cross 16 then 11 to create 6
Cross 17 then 10		Cross 11 again then 6
Create 9 and 18		Create 2 and (if not done so already) 4
Cross 9 creating 8		Cross 6 then 4 then 2 then 8
Create 5 and 22		Destroy 2 and create 23.
Cross 9 and 10 again, then 18		Brave the fire field and create 12
Create 19 then cross it		Cross 12
Create 14 and 21		Activate the encased prism to destroy the generator