R

Rabin, Michael, 100

Reach for the Sky! mind game, 12–13

similar to The Box Chip Game, 47

solution to, 78–79

rectangular cakes, cutting into pieces, 4–5, 74

Refuse and Reveal mind game, 59–60

solution to, 108–110

Revisiting a Traveling Salesman puzzle, 159–162

solution to, 163

revolver chamber, spinning after trigger pulls in Lucky Roulette, 42–43, 96

Rezanka, Ivan, 83, 113, 135

road grid, probing for a tunnel under, 66–67, 113–116

robot, set of tasks for, 131

Rokicki, Tom, 110, 116

root in graph theory, 116