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File: TheDevilsChessboard Notes on a problem I only heard recently. It's been suggested that * "It's just a standard puzzle from coding theory." and a reference is given: * "Two applications of a Hamming code" -- Andy Liu * Mathematics Magazine, January 2009 I've downloaded that and have a copy. He's probably right. However: * 2009/01/xx : http://www.ingentaconnect.com/content/maa/cmj/2009/00000040/00000001/art00001 * 2009/10/31 : https://ocfnash.wordpress.com/2009/10/31/yet-another-prisoner-puzzle/ * 2009/11/17 : https://groups.google.com/forum/#!topic/comp.theory/mSmXV1_oXWc * 2010/10/28 : http://eucalculia.blogspot.co.uk/2010/10/prisoners-and-chessboard-solution.html * 2013/06/17 : http://www.reddit.com/r/math/comments/1gidre/the_devils_chessboard/ * 2013/06/17 : http://xonpc.com/devilchess (answer, pdf file) * 2013/10/03 : http://math.stackexchange.com/questions/513602/determining-the-favored-penny-on-a-chessboard * 2014/12/12 : http://datagenetics.com/blog/december12014/index.html As we can see, it's been around for a time. My only _ contribution was to turn it into a "performance piece."