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Message from discussion no 4 on a plane (3*3*3 puzzle)
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Torsten Sillke  
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 More options 27 Nov 1992, 15:47
Newsgroups: rec.puzzles
From: sil...@math25.mathematik.uni-bielefeld.de (Torsten Sillke)
Date: Fri, 27 Nov 1992 15:25:17 GMT
Local: Fri 27 Nov 1992 15:25
Subject: no 4 on a plane (3*3*3 puzzle)
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On the 2*2*2 grid you can take 5 points, such that no 4 points lay on a
plane. The only possibility (up to symmetry) is:

        o .      . o
        o o      o .

Can you find the only possibility to take 8 points in the 3*3*3 grid
with the same property?

good luck, Torsten Sillke
(as nobody mastered any of the puzzles I posted so far, I hope this is
easy enough for you.)


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