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In this volume, world-leading puzzle designers, puzzle collectors, mathematicians, and magicians continue the tradition of honoring Martin Gardner, who inspired them to enter mathematics, to enter magic, to bring magic into their mathematics, or to bring mathematics into their magic. This edited collection contains a variety of articles connected to puzzles, magic, and/or mathematics, including the history behind given puzzles, solitaire puzzles, two-person games, and mathematically interesting objects. Topics include tangrams, peg solitaire, sodoku, coin-weighing problems, anamorphoses, and more! Contents......Page 6 Preface......Page 10 In Memoriam......Page 12 Frank Harary......Page 14 Harary......Page 18 I: Spin a Tale......Page 22 The Ig Nobel Prizes......Page 24 Martin Gardner and Paperfolding......Page 30 ... Nothing but Confusion? Anamorphoses with Double Meaning......Page 50 II: Ponder a Puzzle......Page 64 Peg Solitaire with Diagonal Jumps......Page 66 The Grand Time Sudoku and the Law of Leftovers......Page 76 Patulous Pegboard Polygons......Page 80 Beamer Variant......Page 90 Packing Equal Circles in a Square......Page 102 III: Bring a Friend......Page 108 Uncountable Sets and an Infinite Real Number Game......Page 110 The Cyclic Butler University Game......Page 118 Misere Play of G-A-R-D-N-E-R, the G4G7 Heptagon Game......Page 128 IV: Play with Numbers......Page 136 The Association Method for Solving Certain......Page 138 The Art of Ready Reckoning......Page 148 Spherical Algebra......Page 160 Mathematical Idol......Page 176 The Elevator Problem......Page 186 V: Take a Shape......Page 194 Jordan as a Jordan Curve......Page 196 Wang Tiles, Dynamical Systems, and Beatty Difference Sequences......Page 200 The Trilobite and Cross......Page 208 Orderly Tangles Revisited......Page 214 Quasi-Periodic Essays in Architectural and Musical Form......Page 233 Ellipses......Page 242 Dances with Tangrams (and withoutWolves)......Page 256 Two Special Polyhedra Among the Regular Toroids......Page 266 Contains a variety of articles connected to puzzles, magic, and/ or mathematics, including the history behind given puzzles, solitaire puzzles, two-person games, and mathematically interesting objects. This title includes topics such as tangrams, peg solitaire, sodoku, coin-weighing problems, and anamorphoses.