Played in the knock-out tournament which is part of the qualifying cycle to decide the challenger for Magnus Carlsen in the next World Championship match.
Makes a change from 2..d6.
Interesting tension - black wants white to take on d5 and white would be delighted if black took on e4 !
Direct chess. More popular 9.Re1
and black leaves the king in the centre behind a strong pawn formation
New as far as I know - assume part of the idea is to distract black from the kingside
Giving black a tricky choice - play d4 in the game and have many of his pieces slightly cut off on the queenside or allow white to take on d5 - possibly white could then switch to attacking the queenside weaknesses
Black has kept his kingside pawns straight as long as possible
This seems wrong letting white open the h-file. 22...Bb7
connects the rooks 23.f4
white's still dangerous but black has better chances than the game. (23.h6
Final mistake(?) blocking black's escape route.
Great recovery to level the match and take it to the speed playoff