Thread: a riddle
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Old 28-11-2008, 03:32 PM   #53
Japo
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Quote:
Originally Posted by DoomYoshi View Post
The devil will always win. If he starts building a moat 1000 squares thick, and he builds it so far away(approx. 100 000 trillion squares away) then the angel won't be able to escape the moat before it is completed.
Er... The only thing that's been proven in this topic is that what you say is wrong:

Quote:
Originally Posted by Japofran View Post
The number of tiles he [the devil] must remove to create a sqare island of side D surrounded by a moat N tiles wide, is 4DN+4N². That takes him an equal number of rounds. In that time the angel can traverse 4DN²+4N³ tiles.

Even if N=1, the angel could traverse 4D+4 tiles by the time the devil builds a moat 1 tile across surrounding a square D tiles across.
No matter how big you make D, it will only take the devil longer to build, and give the angel more margin.
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