White's amateurish kingside attack goes nowhere, Kosteniuk defends and regroups calmly. Then white tries to gain advantage on the queenside with a blockading knight on c5 and after 23...Bc4 it seems he is starting to succeed, but again black calmly regroups and white shifts back to the kingside where Kosteniuk defends with brilliant accuracy.

30.Kh2 is the start of a dubious advance that leaves white's king exposed. 32...Be4 was a key move as she points out, where black now also has a potentially dangerous attack with the opposite color bishops on board.

From here on, the blitz game gets increasingly inaccurate. White continues to build more kingside attack but 36.Re3 was a key inaccuracy where 36...Bxc2 could have simply nabbed a pawn.

White's attack is gaining advantage particularly after 39...g6 but instead of continuing with 40.Bxh6 he plays 40.c4 a serious mistake. Here black misses the combination following 40...Rxb3 and plays 40...Reb8 a counter-mistake. But again white misses opportunity with 41.e6 and plays 41.Bh6 another mistake.

After 41...Rxb3 (finally) white should have played 42.Re2 right away and the game would have very likely been drawn. Instead he plays first 42.Rce1 another mistake then after 42...Rb2 Carlsen makes a huge blunder by moving the wrong rook to e2, losing a rook and setting up a forced mate.

For those who forgot about this game, at the end Carlsen hesitates between the two Rooks, first plays 43.R3e2?, takes it back and plays 43.R1e2, upon which Kosteniuk rightfully complains. All this in two seconds since it's a blitz. An angry Carlsen then walks away without shaking hands. Not very galant.

https://www.youtube.com/watch?v=PCd...