Challenging chess tasks for puzzle buffs and answers to the recreational problems
A topological problem with a fresh twist, and eight other new recreational puzzles
The graceful graphs of Solomon Golomb, or how to number a graph parsimoniously
Dr. Matrix poses some heteroliteral puzzles while peddling perpetual motion in Houston
How to triumph at nim by playing safe, and John Horton Conway's game “Hackenbush”
Further encounters with touching cubes, and the paradoxes of Zeno as "supertasks"
Advertising premiums to beguile the mind; classics by Sam Loyd, master puzzle-poser
New puzzles from the game of Halma, the noble ancestor of Chinese checkers
The plaiting of Plato's polyhedrons and the asymmetrical yin-yang-lee
Ticktacktoe and its complications, and answers to the quickie puzzles
Quickie problems: not hard, but look out for the curves
The Turing game and the question it presents: Can a computer think?
The combinatorial richness of folding a piece of paper
Geometric fallacies: hidden errors pave the road to absurd conclusions
The orders of infinity, the topological nature of dimension and "supertasks"
On cellular automata, self-reproduction, the Garden of Eden and the game "life"
Lessons from Dr. Matrix in chess and numerology
The paradox of the nontransitive dice and the elusive principle of indifference
A new collection of short problems and the answers to some of "life's"
The fantastic combinations of John Conway's new solitaire game "life"