Regarding the attachment, no need to worry! this is the not-so-dangerous content of the attachment: _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun Just save it and open it with an ascii editor to convince yourself. I love linux ;-) regards Christoph -- DI Christoph Pacher Optoelectronic Engineering - Quantum Technologies ARC Seibersdorf research GmbH Tech Gate Tower, 3rd Floor A-1220 Wien, Donau-City-Str. 1 fon: +43(0)50550 ext. 4165, fax: ext. 4190 mobile: +43(0)664/8251077 mailto:christoph.pacher@arcs.ac.at http://www.smart-systems.at -----Original Message----- From: math-fun-bounces+christoph.pacher=arcs.ac.at@mailman.xmission.com on behalf of dasimov@earthlink.net Sent: Fri 2/10/2006 5:54 PM To: math-fun Subject: RE: [math-fun] how many 4x4x1 blocks Rich, did you know your math-fun e-mail as quoted came with an attachment? It's listed by my mailer as "Unknown 166-B". Also my Earthlink mail program shows a red flag next to it, which I take is a warning. --Dan << I've got a proof. I'll hold it back for a couple of days to give others a chance to play with the puzzle. Rich

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