Cryptograms

IBM Research: Ponder This IBM Research: Ponder This- Monthly logic and math puzzles set by IBM researchers with solutions. Mathematical Puzzles Mathematical Puzzles- Number puzzles with various levels of difficulty and solutions. Includes printable versions. Two Envelope Paradox - Solution Two Envelope Paradox - Solution- Claims that the two envelope paradox comes from the incorrect use of probabilities. CellFighter CellFighter- Shareware game based around an extension of the game of life. Monty Hall Game 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.] WU Forums WU Forums- Discussion board hosted at Berkeley with talk about a variety of solved and unsolved brain teasers. The Monty Hall Problem The Monty Hall Problem- A probability theory puzzle with solutions. [English and German.] Perplexus Perplexus- A forum and collection of brain teasers, logic problems, math problems, paradoxes, science games, probability, riddles, and geometric shapes. The puzzles are searchable…