LONDON (AP) — After more than 50 hours of play over nearly three weeks, the chess world championship title will be decided by speedy tiebreaker games on Wednesday.

A 12-game battle of brains between American challenger Fabiano Caruana and reigning champion Magnus Carlsen of Norway has resulted in 12 straight draws — the first time that has happened in a chess world championship match.

That means the match — which is taking place behind soundproof glass on a stage in London — now comes down to a series of rapid games that could even conclude in a sudden-death format known as "Armageddon" if a w...