For all of the scandals that have rocked the world of elite chess in recent years, rumors that a 19-year-old grandmaster used anal beads and artificial intelligence to beat the world's top player might be the most bizarre. Speculation has grown online that San Francisco-born Hans Niemann, a relative newcomer to the sport, inserted wireless vibrating anal beads into his body before his victorious match against World No. 1 grandmaster Magnus Carlsen, 31, last week. Chess fans have speculated that an accomplice watching the match at the Sinquefield Cup in St. Louis used a chess program to determine the perfect...