Commentary for black move 25:

First of all, obviously Garry is the last in the world championship line of 13 world champions, great chess players that brought their own unique kind of standing to chess and improve the understanding of the world of chess. So he really stands on the shoulders of giants. And he is the best chess player, best human chess player. Did you guys all hear that comment by Lou Gerstner, the CEO of IBM? He was asked why did this match get so much attention? He said well, it's very simple. What we have is the world's best chess player vs. Garry Kasparov. Woooo! Jumping the gun. And Garry, like conventional wisdom, these mistakes, we know they're mistakes. There's no doubt about the move h5 and things like that and that Garry should be punishing the machine. And yet there's been a couple of times where he's been very hesitant. Like before, we were thinking "Oh, won't this be great? It will be a game where we're castled on opposite sides of the board, it will be this great attacking game, and he ducked the question. He played the move Bg5, which was a very strange move. Because he's got the two bishops.

DB MOVE: 25...Nc4

YASSER SEIRAWAN: A devilish kind of move.

YASSER SEIRAWAN: Where was I going?

MAURICE ASHLEY: You were talking about about Kasparov and the long line --

YASSER SEIRAWAN: We saw this move --

MAURICE ASHLEY: I mean the move is highly unusual, this Nc4 move. I wouldn't have anticipated this kind of funky play with the knights going two different ways, and Kasparov himself is trying to check to make sure that there are no problems that he might miss. It's so easy to miss -- this is the kind of position you miss something suddenly against a computer.

YASSER SEIRAWAN: Exactly. What he did early in the opening was this move h3. He gained the two bishops. Then when he played this move Bg5, he lost the two bishops. And Deep Blue I think has reduced, or neutralized the disadvantage of the move h5. By the way, this move Ne5-c4 is an annoying move, and it makes a lot of sense, because of what Susan was saying. This bishop on g2 is a gorgeous bishop. I mean it rakes the board. That long diagonal is very nice. And now that Deep Blue has voluntarily put the knight on the diagonal, now that Garry has played Nd4-f3, it makes sense to leave the knight and bishop there because the bishop no longer is active.

MAURICE ASHLEY: That's a good point. I'm sorry, we have been ramble og a little bit. There was a question earlier by the young man in the audience. Let's please get back to his question. Thank you for waiting.

AUDIENCE MEMBER: I just wanted to go back two moves. I had a suggestion.

MAURICE ASHLEY: Which move do you want to go back to?

YASSER SEIRAWAN: Two moves. Tell us when.

MAURICE ASHLEY: When to stop.

AUDIENCE MEMBER: Okay, stop. I was thinking maybe try and get something going with maybe Qb3.

MAURICE ASHLEY: In this position Nf3 was white's move so it's black's move in this position.

YASSER SEIRAWAN: Keep going back?

AUDIENCE MEMBER: I guess so, yeah.

YASSER SEIRAWAN: I think the young gentleman is about to point out something that also occurred to me, and that was the move Rh1-e1 became a wasted move, because as we've seen, immediately came Re1xd1. So perhaps in this position Garry should have done something else than the move Rhe1. You can't play Qb3 immediately because of the hanging pawn on f2. You caught that, right?

AUDIENCE MEMBER: Yeah.

YASSER SEIRAWAN: Okay, good.

MAURICE ASHLEY: Of course he did.

YASSER SEIRAWAN: Of course he did. But I thought that what Garry should do is centralize his bishop with the move Bg2-e4. Then we would have had the same position, if indeed we see the move c5 for just a moment, then after Nf3 Rxd1 Rxd1 Nc4, we would have the exact same position as in the game, but white would have had this active bishop on e4 instead of this passive bishop on g2. So some of Garry's moves torques my mind, have been very imprecise.

SUSAN POLGAR: But here there's a little danger because the bishop on e4 is not quite productive because maybe Ne2 is a threat.

YASSER SEIRAWAN: Would be a threat.

SUSAN POLGAR: And if the queen takes, the bishop is hanging.

YASSER SEIRAWAN: Exactly.

SUSAN POLGAR: But still, it's a good idea to keep it ahead of the knight than behind it. (Audience applause.)

YASSER SEIRAWAN: She is the world champion, okay?

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