In the law library of the Cook County jail in Chicago, the chase was on. Detainee Emmanuel Garcia frantically moved his king around a virtual chessboard, losing one piece after another as his opponent closed in.
Just when it seemed all was lost, the timer hit zero, ending the game in a draw. A dozen other men dressed in tan jail scrubs applauded: The result helped the team of detainees defeat a band of Brazilian prisoners they were playing over the internet.
Garcia, though, thought he should have done better.
"I made a couple mistakes," said the 33-year-old. "I tried to give him a sacrifice and get an advantage, but he predicted it, so it didn't work. Because of that, I had to change my whole game."
So it went in the first international chess tournament for inmates, pitting Cook County against prisoners in six countries, including Russia, Armenia, Belarus, Italy and England. The matches will continue until a champion is crowned.
The players sat at tables furnished with laptop computers and small American flags, making their moves electronically as Mikhail Korenman, who teaches the jail's chess classes, coordinated with his counterparts over a balky Skype connection.
The tournament is the latest development in the jail's chess program, founded seven years ago with the help of Russian grandmaster Anatoly Karpov. About 120 detainees take classes in the game, and 15 of the best were invited to take on the world in the two-day event conducted under the auspices of FIDE, the governing body of international chess competition.
The games were played on the Chess.com platform with a 15-minute time limit. Antoine Thorne, 29, of Chicago, was playing a close match against a Brazilian opponent when his rival gave him a golden opportunity, neglecting to move his queen out of danger.