From anandrao@hk.super.net Thu Dec 16 01:12:12 1993 Return-Path: Received: from hk.super.net by life.ai.mit.edu (4.1/AI-4.10) for /com/archive/cube-lovers id AA29768; Thu, 16 Dec 93 01:12:12 EST Received: by hk.super.net id AA08737 (5.65c/IDA-1.4.4 for cube-lovers@ai.mit.edu); Thu, 16 Dec 1993 14:12:01 +0800 Date: Thu, 16 Dec 1993 14:08:39 +0800 (HKT) From: Mr Anand Rao Subject: Re: Description of Tangle, Part 2 To: Dik.Winter@cwi.nl Cc: cube-lovers@ai.mit.edu In-Reply-To: <9312160203.AA10975.dik@boring.cwi.nl> Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Thu, 16 Dec 1993 Dik.Winter@cwi.nl wrote: > My memory may be extremely faulty of course, but was there not more than > one single solution for the 5x5? (Not unprecedented, I have one puzzle > that promises a single solution but there are hundreds.) And, is there > a solution for the 10x10? I seem to remember that there was (or I had) > a convincing argument that such a thing did not exist. I should go through > the lesser used parts of my memory one of these days. For each Tangle, there are 2 solutions and no more. I have searched the tree thoroughly and verified this. Counting 4 rotations and that 2 pieces are identical, the total search gives 16 'solutions'. The colourful little pamphlet that comes with the puzzle says that there IS a solution to the 10*10 puzzle.