The chess world was surprised by the early 4.h3 by Ding Liren in game 2 of the World Chess Championship. Some called it the “earliest World Chess Championship surprise” while others like Irina Krush in the official commentary were simply shocked.
For those following the team of seconds of Ding Liren, the surprise was not as big. We know from day 1 that Richard Rapport is in Astana and that brings a solid explanation to the move. But there is more and our #TweetOftheDay section makes a nice compilation of the reactions.
Why 4.h3 is not a popular move: A free opening principles course