Cooper’s chess repertoire has grown, too, from roughly four “openings,” or strategies to approach the initial 10 to 15 moves of a game, to more than a dozen.

Tunde Onakoya, 29, began his 60-hour chess game in Times Square in New York City on Wednesday, April 17, before calling it quits at 12:40 a.m. on Saturday, April 20, said The Associated Press.

Chess can be a nearly silent game when two people are in the zone. Green felt quietly brushing against plastic or stone; perhaps a clock clicking back and forth as the time dwindles down.

A Nigerian chess champion and child education advocate played chess nonstop for 60 hours in New York City’s Times Square to break the Guinness World Record for the longest chess marathon. Tunde ...