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CellFighter - Shareware game based around an extension of the game of life. http://www.cellfighter.com/conways-life-download.html |
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Dave's Logic Puzzles - Monthly logic puzzles with solving grids. http://members.aol.com/dfcurran/logic/logicpuz.html |
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IBM Research: Ponder This - Monthly logic and math puzzles set by IBM researchers with solutions. http://www.research.ibm.com/ponder/ |
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Jim Loy's Puzzle Page - Classic and original puzzles. http://www.jimloy.com/puzz/puzz.htm |
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Leisure Ideas: Puzzles - Some mathematical puzzles with answers and/or a hint. http://www.leisureideas.com/logic%20puzzles.htm |
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Mathematical Jigsaw Puzzles - Information on polyominos and square puzzles. http://home.hetnet.nl/~paslen/jigsawpuzzles.html |
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Monty Hall Game - JavaScript example of the Monty Hall Game. This game demonstrates the real (empirical) affect of statistics. [Does not display correctly in all browsers.] http://montyhallgame.shawnolson.net/ |
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Perplexus - A forum and collection of brain teasers, logic problems, math problems, paradoxes, science games, probability, riddles, and geometric shapes. The puzzles are searchable and categorized, most have solutions. http://perplexus.info/ |
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Quick Logic Puzzles - Use the clues provided to deduce the correct sequence of numbers in the hidden code. http://www.robertwilliams.org/qlp/index.html |
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Tangram Magic Egg - Tangram which creates hundreds of birds including geometry, tasks, solutions and downloads. http://michael.bischoff.bei.t-online.de/index%20uk.htm |
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TechInterview - Answers to technical interview questions, programming problems, and brain teasers. http://www.techinterview.org/ |
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The Monty Hall Problem - A probability theory puzzle with solutions. [English and German.] http://www.remote.org/frederik/projects/ziege/ |
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The Puzzles of Oscar - Contains puzzles and games with solutions. http://uk.geocities.com/oscarlagioia/riddles.html |
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The Truth Tree's Math and Logic Board - Collection of math and logic puzzles ranging in levels of difficulty. http://www.truthtree.com/mathdoor.html |
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The Two-Envelope Paradox: A Complete Analysis? - Describes aspects of a critical problem and apparent paradox in probability theory. http://jamaica.u.arizona.edu/~chalmers/papers/envelope.html |
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Two Envelope Paradox - Solution - Claims that the two envelope paradox comes from the incorrect use of probabilities. http://www.anc.ed.ac.uk/~amos/doubleswapsoln.html |
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WU Forums - Discussion board hosted at Berkeley with talk about a variety of solved and unsolved brain teasers. http://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board=riddles_hard |