Commentary for white move 30: Okay, let's take a look at what has happened now. And we have the move Bb6. Garry is getting nudged a bit here. We're now expecting to see the move Q on d8 -- is there any reason why we want want to wander off, Qh4? Although we're anticipating the move Qe8, we're just looking for a moment at a move like Qh4. As we pointed out, after axb5, black has a possibility of Nxb5, and he doesn't seem to be injured by this. Rxa6, Rxa6 Rxa6 all look like natural moves. Nxc3, and black is doing quite okay?

MIKE VALVO: Ra7 might be embarrassing.

YASSER SEIRAWAN: Ra7 attacking the bishop on d7. The bishop has got to drop back. Be8. There's a semiathlete here, the semithreat is to play Q takes knight because then we have a move like this.

AUDIENCE MEMBER: Ba4?

YASSER SEIRAWAN: Ba4 is not possible because there's simply Nxa4. And at this moment a move like -- so Qh 4 is certainly tactically playable. I'm really not too sure what the queen would in fact be doing on H 4. Qh4, Qe8, Qe7 all look like possible moves. A nice thing I'd like to see Deep Blue doing actually is anchoring his bishop on the C A square. I think that would put a lot of pressure on black's position. So, for example, a move like Qh4, coming out, and Bc5 sets up that position we saw a moment ago with axb5. More questions from our audience? Do we have -- yes? If you'll just pass the mike for a moment.

AUDIENCE MEMBER: Yeah. To put Deep Blue's achievement in historical perspective, could you talk about how Kasparov compares to past champions?

YASSER SEIRAWAN: How Kasparov compares to past champions.

MIKE VALVO: Like who is the best?

YASSER SEIRAWAN: Well, first of all, I tend to think of chess as an enormously challenging game which has evolved over time.

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