How long can Sergey Karjakin skirt the precipice before succumbing to Magnus Carlsen? For the second straight game Karjakin was in big trouble from early on, but saved the day with dogged defense. It's very impressive, but very dangerous, and his team will have to do a better job of giving him positions where Carlsen will have to do some defending.
Today is a rest day, and game 5 is tomorrow. Game 4 is here, with my notes.