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#41 | ||
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Location: Krakeroy, Norway
Posts: 3,014
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![]() It doesn't matter if the square removed is just next to Angel or lightyears away. The main point is that from Angel's point of view, that removed square puts a limit in only one of 8 directions, at the most. With only one square removed, a maximum of one direction is closed, leaving Angel to choose from any of the other 7. If we ignore any diagonals and just look at the horizontal/vertical movements, that still leaves three movements.
All Angel has to do to make sure Devil never traps him/her/it, is to always move in one of two directions say, down and left, and never up and right. That will always give Angel an escape route.
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#42 | ||
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Location: ,
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![]() Quote:
A strong and definitive way of proving that the devil can trap an angel (without necessarily proving that it's the max powered angel he can trap?) would be proving that he's able to build a moat around a trap larger than the area the angel can reach in the time the trap takes to be built. But as I said that's not even true for the minimal N=1. Any other strategy for trying to prove anything doesn't seem robust, since it needs a hypothesis in the form of the strategy the angel is going to follow consistenly and blindly (even for a obviously contraproductive move). First you'd have to prove that it's the optimal strategy in any circumstance, and that looks more difficult to prove, if possible at all, which I doubt. At least all the demonstrations in the article are that way.
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Life starts every day anew. Prospects not so good... Last edited by Japo; 26-11-2008 at 05:32 PM. |
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#43 | ||
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Location: El Paso, United States
Posts: 104
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![]() Ya'll are making my head hurt.
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GO ARMY BEAT NAVY "People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf."-George Orwell "The price of freedom is the blood of Patriots"-Thomas Paine Support You're Countries Veterans :akimbo: |
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#44 | ||
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Location: Christchurch, New Zealand
Posts: 1,044
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![]() Japofran is right, how can we prove that two players with human-based intelligence can block one another at any given time? We can't.
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#45 | ||
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Location: Nitra, Slovakia
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![]() you didn't get me, i meant to say that infinitely large board allows devil to build moat at any distance, so n can raise into huuuge numbers
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#46 | ||
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Location: Waterside, South Africa
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![]() I think it's safe to guess which field Japo is in IRL... LOL
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#47 | ||
Join Date: Apr 2008
Location: Amerika, Netherlands
Posts: 429
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![]() Both can win or lose.
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"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it."
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#48 | ||
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![]() The Devil hasn't got me yet IRL.
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Life starts every day anew. Prospects not so good... |
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#49 | ||
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Location: Christchurch, New Zealand
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![]() With the conditions in _r.u.s.s's 'riddle', he won't. Not unless you make a mistake...
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#50 | ||
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Location: Nitra, Slovakia
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![]() how can you be sure about it, prove it=P
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