csmath: What started as Accelerated Queen Indian turned into Grunfeld-like position.
What we have is "forced" Queen Indian (accelerated version) but there is a drawback, the arising positions are generally worse for black.
[big surprise is that Andreikin decides to play very aggressive.]
[New move and very logical choice as black is seeking to open position for his bishops.]
[Position is now has Grunfeld features and this move is one of typical errors in Grunfeld. 14. ...exd4, 15. cxd4 c5! and we have typical Grunfeld position with counterchances.]
[Grunfeld 15. Bc4 looks as a stronger move pinning the f-pawn.]
[this move is a waste of time in a sharp position.]
[Grunfeld with serious attack chances.]
[Completely misplaying the position. Black is preparing b6 without noticing that white already has a decisive attack!]
[Andreikin does not see it either!
17. hxg6! hxg6, 18. Ng5 Nf8, 19. Qg4 with decisive attack through h-file]
[19. Rb1 is stronger removing rook from dangerous diagonal while attacking b-pawn and x-raying bishop on b7]
[why not 23. Bxe4 with chances to go into oposite color bishop ending with good chances for a draw?]
[25. ...Rc7 is alternative but Krajakin does not want to part with bishop pair. White is clearly better with superior position and black bishops are bystanders.]
[black is forced to wait as he has no useful moves. Now it is only a matter of time when he will lose concentration and make error.]
[Decisive error. Loses pawn on e5 instantly.]
[Black is already lost but this is simply dangerously bad move. Black cannot abandon long diagonal because of mate threats on g7. He needs to have access to f8 with his bishop.]
[threatening 35. Qb2]
34. ... Qd4
35. c5! Kf8
[Black is lost since 35. ...Qxc5?, 36. Qb2 Qf8, 37. Qe5 leads to loss of material]
[looking for longterm advantage with passer? Straightforward 36. Rab1 was stronger.]
[Unexplainable move. Karjakin is visibly impatient but this is accelerating his defeat. The game is now effectively over since white crashes black king defences with ease.]
Not a great game by either. Karjakin misplayed Grunfeld position and got himself in strategically lost position where he showed more impatience than Andrekin and lost duly.