Included in this category are brain teasers and puzzles that are mathematical, or require the usage of logic to solve them.

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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.
Mathematical Puzzles
Number puzzles with various levels of difficulty and solutions. Includes printable versions.
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.]
The Monty Hall Problem
A probability theory puzzle with solutions. [English and German.]
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.
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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Last update:
September 23, 2016 at 13:45:06 UTC
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