Here are 41 pieces, which were previously published in various academic journals and popular magazines, by the esteemed master of mathematical games and puzzles who wrote the Scientific American games column for 25 years. These articles span a wide range of topics, including discussion of why a computer will always beat a human player at games of chance, tiling puzzles, computer and calculator "magic" tricks, and a controversial critical review of a teaching fad known as the "new new Math."