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Path: utzoo!watmath!clyde!cbosgd!ihnp4!mmm!cipher
From: cipher@mmm.UUCP (Andre Guirard)
Newsgroups: net.puzzle
Subject: Re: LED Puzzle (SOLUTION from author)
Message-ID: <405@mmm.UUCP>
Date: Tue, 14-Jan-86 11:25:14 EST
Article-I.D.: mmm.405
Posted: Tue Jan 14 11:25:14 1986
Date-Received: Fri, 17-Jan-86 03:08:19 EST
Reply-To: cipher@mmm.UUCP (Andre Guirard)
Organization: 3M Company, St. Paul, Minn.
Lines: 47


Earlier I posted a puzzle (which appears below along with its answer).
Nobody sent in the right answer.  If anyone posted the right answer on
the net I probably missed it, because we have had no news feed in
Minnesota for several weeks.

>  ***     ---     ***     ***     ---     ***     ***     ***
> |   *   *   |   *   *   *   |   |   |   *   |   *   *   *   *
>  ---     ---     ***     ***     ***     ---     ---     ---
> |   *   |   *   |   |   *   |   |   |   |   *   |   |   |   |
>  ---     ***     ---     ---     ***     ***     ***     ---
> 
>      ***     ***     ---     ***     ***     ---     ---
>     *   *   |   *   |   *   *   |   *   |   |   *   |   |
>      ---     ***     ---     ---     ***     ---     ---
>     |   |   |   *   *   |   *   |   |   *   |   *   |   |
>      ***     ***     ---     ***     ---     ---     ***
> 
>          ---     ***     ***     ---     ***     ---
>         *   |   |   |   *   *   |   |   *   *   |   *
>          ***     ***     ---     ***     ***     ---
>         |   *   *   *   |   |   *   *   |   |   |   *
>          ---     ***     ***     ***     ---     ***
> 
> 
> The above represent LEDs.  The *s indicate a lit segment.  The answer
> is a common English word.

The secret is: take the "exclusive or" of each pair of side-by-side
LEDs.  The result appears below and between the pair.  Do this with the
last row and you get a new row with five LEDs which read:


	       ***     ---     ***     ***     ***
	      *   |   *   *   *   *   *   *   *   |
	       ---     ***     ***     ---     ***
	      *   |   *   *   *   *   *   *   |   *
	       ***     ---     ---     ***     ***

Read these as letters in the English alphabet and you get "chaos" which
is the answer.
-- 

 /''`\						Andre Guirard
([]-[])						High Weasel
 \ x /	   speak no evil			ihnp4!mmm!cipher
  `-'