On a day when countless eighth graders across the country saw their orthodontists and fretted over potential dates for the middle school graduation dance, Guan calmlyplayed in the world's most famous golf tournament in a threesome that included Ben Crenshaw, the 61-year-old former Masters champion who is old enough to be Guan's grandfather.
While Kasparov struggled and sweat, the machine played like a confident general looking over a complex battlefield, calmly redirecting troops here and there, no rushing, waiting for the critical moment.