Part I. Vignettes. Should you be happy? / Peter Winkler ; One-move puzzles with mathematical content / Anany Levitin ; Minimalist approaches to figurative maze design / Robert Bosch, Tim Chartier, and Michael Rowan ; Some ABCs of graphs and games / Jennifer Beineke and Lowell Beineke ; Part II. Problems inspired by classic puzzles. Solving the Tower of Hanoi with random moves / Max A. Alekseyev and Toby Berger ; Groups associated to Tetraflexagons / Julie Beier and Carolyn Yackel ; Parallel weighings of coins / Tanya Khovanova ; Analysis of crossword puzzle difficulty using a random graph process / John K. McSweeney ; From the outside in : solving generalizations of the Slothouber-Graatsma-Conway puzzle / Derek Smith ; Part III. Playing cards. Gallia Est Omnis Divisa in Partes Quattuor / Neil Calkin and Colm Mulcahy ; Heartless poker / Dominic Lanphier and Laura Taalman ; An introduction to Gilbreath numbers / Robert W. Vallin ; Part IV. Games. Tic-tac-toe on affine planes / Maureen T. Carroll and Steven T. Dougherty ; Error detection and correction using SET / Gary Gordon and Elizabeth McMahon ; Connection games and Sperner's Lemma / David Molnar ; Part V. Fibonacci numbers. The Cookie Monster problem / Leigh Marie Braswell and Tanya Khovanova ; Representing numbers using Fibonacci variants / Stephen K. Lucas.