This volume honors Martin Gardner, with a variety of articles connected to puzzles, magic, and mathematics, including the history behind given puzzles, solitaire puzzles, two-person games, and mathematically interesting objects. The book offers contributions from world-leading puzzle designers, puzzle collectors, mathematicians, and magicians who have been inspired by Gardner to enter mathematics, to enter magic, to bring magic into their mathematics, or to bring mathematics into their magic. Topics include tangrams, peg solitaire, sodoku, coin-weighing problems, anamorphoses, and more.

In Memoriam. Frank Harary. Harary. Spin a Tale. The Ig Nobel Prizes. Martin Gardner and Paperfolding. . . . Nothing but Confusion? Anamorphoses with Double Meaning. Ponder a Puzzle. Peg Solitaire with Diagonal Jumps. The Grand Time Sudoku and the Law of Leftovers. Patulous Pegboard Polygons. Beamer Variant. Packing Equal Circles in a Square. Bring a Friend. Uncountable Sets and an Infinite Real Number Game. The Cyclic Butler University Game. Misere Play of G-A-R-D-N-E-R, the G4G7 Heptagon Game. Play with Numbers. The Association Method for Solving Certain Coin-Weighing Problems. The Art of Ready Reckoning. Spherical Algebra. Mathematical Idol. The Elevator Problem. Take a Shape. Jordan as a Jordan Curve. Wang Tiles, Dynamical Systems, and Beatty Difference Sequences. The Trilobite and Cross. Orderly Tangles Revisited. Quasi-Periodic Essays in Architectural and Musical Form. Ellipses. Dances with Tangrams (and without Wolves). Two Special Polyhedra among the Regular Toroids.