Commentary for white move 21:

YASSER SEIRAWAN: Now we had this Bh3 by Garry, we didn't have a chance to look at Nf3, but we got Qc7. Then we have another move by Garry, Bh3-g4, offering an exchange of bishops. Deep Blue responded -- DB MOVE: 20...Bg6.

YASSER SEIRAWAN: I thank the audience very much. I'll be back in about a half an hour. Thank you. GK MOVE: 21 f4

ROMAN DZINDZIHASHVILI: I don't think in this position -- what I think -- why I think white apparently did not play Nxg4 despite lying this bishop so much is because Nxg4, pawn would take on g4 -- AUDIENCE MEMBER: You missed a move.

ROMAN DZINDZIHASHVILI: We did not miss a move.

MIKE VALVO: We'll go back to that in a second.

ROMAN DZINDZIHASHVILI: And after Bg6 now, black played Bg6 and white goes Nd5 white absolutely dominates the center, and black's bishops are very pitiful, so I think that's why the computer decided to keep the knight on f6 controlling d5.

MIKE VALVO: And in this position Garry played f4.

ROMAN DZINDZIHASHVILI: The position is now clearly superior for white, and I think it's easy to play, and I don't think time factor means a lot now, because the position is fairly closed and not too many variations to calculate, and I don't think Kasparov --

MIKE VALVO: What's white's plan going to be?

ROMAN DZINDZIHASHVILI: White's next move -- let's say black moves here.

ROMAN DZINDZIHASHVILI: f5 looks very strong.

MIKE VALVO: So the knight can't move to make a hole for the bishop because Nd5 becomes too powerful.

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