From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: * X-Spam-Status: No, score=1.3 required=5.0 tests=BAYES_00,INVALID_MSGID, MSGID_RANDY autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,3e08c98d7ce85399 X-Google-Attributes: gid103376,public From: Robert Dewar Subject: Re: Eight Queens problem (was Re: Kindness) Date: 1999/09/06 Message-ID: <7r1c4c$9an$1@nnrp1.deja.com>#1/1 X-Deja-AN: 521817172 References: <37CC6844.AB898EEE@rational.com> <37CE93CD.799A225A@pwfl.com> <37CF0FE0.2B299477@acenet.com.au> <37CFF7DC.CFF9717C@pwfl.com> <1999Sep3.125818.1@eisner> <37D02CC0.BEF1BC69@mitre.org> X-Http-Proxy: 1.0 x42.deja.com:80 (Squid/1.1.22) for client 166.72.71.164 Organization: Deja.com - Share what you know. Learn what you don't. X-Article-Creation-Date: Mon Sep 06 21:36:12 1999 GMT X-MyDeja-Info: XMYDJUIDrobert_dewar Newsgroups: comp.lang.ada X-Http-User-Agent: Mozilla/4.04 [en] (OS/2; I) Date: 1999-09-06T00:00:00+00:00 List-Id: In article , "Vladimir Olensky" wrote: > Eight Queens Problem and was discussed and illustrated > in "Programming in Modula-2" written by Niklaus Wirth. > There were several editions of this book. Third edition was > published by Springer-Verlag in 1985. > This book may be useful not only for those using Modula-2 but > also for those learning Ada. I am sure that Vladimir knows this, but just to avoid any confusion, this problem is much older than 1985. The reference to the NW book is simply one of many discussions of this well known problem (well known because it is the canonical example, one might say 8 queens is to backtracking as factorial is to recursion :-) Sent via Deja.com http://www.deja.com/ Share what you know. Learn what you don't.