Monckton's Eternity Puzzle went bad on him, but is it possible to create similar puzzles with a reasonable expectation that no one is going to solve them over, say, a three year time frame, even with computers and extreme cleverness? It does seem to be a good idea to sell puzzles with big prizes for solutions if only one could know that they're attractive enough to sell and unlikely to be solved before the time limit... * * ** * * Old news from about 2000: Christopher Monckton thought he was on to a winner when he invented a new puzzle and offered 1 million pounds to the first person who solved it. Alas, his brainchild looks set to be a ruinous loser... http://showcase.posiweb.net/media/property01.pdf ********* Thane Plambeck 650 321 4884 office 650 323 4928 fax http://www.qxmail.com/ehome.htm