(1) Gelfand,Boris - Ivanchuk,Vassily [A04]
Kings' Tournament Bazna ROM (8), 22.06.2009
Black's plan is to complete development with b6 and Bb7, after which he will have a good version of the so-called Hedgehog structure. All he has to do is to watch out for some tactical tricks.
This natural move is new.
Typically for such positions White threatens Nc3-d5.
[The development of the bishop via d7 to c6 is bad because of the mentioned idea Nc3-d5: 13...Bd7
and the change of pawn structure favours White.]
The main advantage of this move is that it frees square d8 for the queen. [15...b6
would be a big tactical mistake in view of 16.Ncb5
and the black queen is trapped! After the forced 17...Nc5
White remains with a pawn up in endgame.]
White won a tempo by transferring the bishop to d4, but this changes nothing: Black is ready again to play 18...b6, with equality. Gelfand took a good practical decision to force a draw. After all White is not better and Ivanchuk had time advantage. Moreover, such Hedgehog-type of positions are very tricky and any inaccuracy from White's side can be severely punished. So Gelfand decided to repeat the position.