CNN  —  The ancient game of chess is one steeped in tradition, with a history dating back centuries. It was once a game purely of endurance, a test of patience with titanic battles often taking days to find a winner. Much of that is true today, with the classical form of chess still prominent on the global stage. However, it’s no longer alone and perhaps in danger of taking a back seat. That’s because of the explosion of shorter forms of chess, which compile all those existing traditions into