In Tanzania, Dewain Barber taught chess to a Maasai warrior. In Sicily, he topped dinner at a restaurant by playing the age-old game with a waiter. Aboard a train in India, he had a match with a crew ...

There’s a scene in the movie “I, Robot” in which a bunch of robots jump off a speeding vehicle and try to kill Will Smith while he’s zooming through a tunnel. The most chilling thing about it is that ...