Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hplabsz!dleigh
From: dleigh@hplabsz.HPL.HP.COM (Darren Leigh)
Newsgroups: comp.sys.amiga
Subject: Re: Tetris .. where?
Summary: n-ominoes
Message-ID: <3102@hplabsz.HPL.HP.COM>
Date: 19 Mar 89 00:53:37 GMT
References: <853@microsoft.UUCP> <16810@cisunx.UUCP>
Reply-To: dleigh@hplabs.UUCP (Darren Leigh)
Distribution: usa
Organization: Open Fly Systems
Lines: 27

In article <16810@cisunx.UUCP> ejkst@unix.cis.pittsburgh.edu (Eric J. Kennedy) writes:
>In article <853@microsoft.UUCP> w-colinp@microsoft.uucp (Colin Plumb) writes:
>>One thing I'd really like to see in a Tetris-like game is different
>>polyominoes.  Dominoes are trivial, as are triominoes, but pentominoes
>>would be quite a challenge.  Hexominoes would be damn near impossible,
>>I suspect.  And let people set the depth & width of the playing field, too.
>
>Actually "pentominoes" would be quite impossible.  You can't fill a
>plane with regular pentagons.  "Hexominoes" on the other hand is quite
>possible.

Me-thinks you are a might confused about pentominoes and polyominoes
in general.  A domino is constructed from two squares, stuck together,
with the corners aligned.  Note that there is only one possible shape
you can make from two equal sized squares.  Triominoes would be played
with all possible shapes made from three squares.  There are two.
Tetrominoes and Tetris are played with all possibles shapes made with
four squares (there are five shapes, not counting mirror images).
Pentominoes (featured in Clarke's _Imperial Earth_) is played with the
twelve possible shapes you can make with five squares, again sans
mirror images.  If a tetris games is written right, generalizing it
should be no problem.

========
Darren Leigh
Internet:  dleigh@hplabs.hp.com
UUCP:      hplabs!dleigh