Win a New Martin Gardner Book #4

September 24, 2008 [Update] This week is over! The winner, and the current contest, will be announced here. Today, we’ll start on the puzzles from Hexaflexagons, Probability Paradoxes, and the Tower of Hanoi. I’ll run three; that’s three more weeks of puzzle goodness. Incidentally, don’t miss Don Albers’ lengthy interview with Gardner, updated weekly. Last [...]