Mathematical
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» CellFighter 
Shareware game based around an extension of the game of life. » IBM Research: Ponder This
Monthly logic and math puzzles set by IBM researchers with solutions. » Jim Loy's Puzzle Page
Classic and original puzzles. » Kakuro-san
Providing graded Kakuro puzzles every day, plus old puzzles. » Leisure Ideas: Puzzles
Some mathematical puzzles with answers and/or a hint. » Mathematical Jigsaw Puzzles
Information on polyominos and square puzzles. » 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.] » 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. » Quick Logic Puzzles
Use the clues provided to deduce the correct sequence of numbers in the hidden code. » TechInterview
Answers to technical interview questions, programming problems, and brain teasers. » The Monty Hall Problem
A probability theory puzzle with solutions. [English and German.] » The Puzzles of Oscar
Contains puzzles and games with solutions. » The Truth Tree's Math and Logic Board
Collection of math and logic puzzles ranging in levels of difficulty. » Two Envelope Paradox - Solution
Claims that the two envelope paradox comes from the incorrect use of probabilities. » WU Forums
Discussion board hosted at Berkeley with talk about a variety of solved and unsolved brain teasers. |
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