Mathematical Puzzles and Curiosities Author:Barry R. Clarke This intriguing mix of thought-provoking diversions features articles on recreational math as well as puzzles involving logic, mathematics, and creativity. Requiring only basic algebra skills, classic and new puzzles include The Monty Hall Problem, The Unexpected Hanging, The Shakespeare Puzzles, and Finger Multiplication. "Very satisfying." ? W... more »ill Shortz, Crossword Editor, The New York Times.« less