Commentary for black move 17:

So that equalizes the material balance. It does bring about a strange situation on the chessboard. But it seems to me to solve some serious problems for him. His rook on h8 is now ready to come in the game. The bishop on e7 is already in the game. And after one move, Kb7, the other rook will be in the game. Now, those problems will be solves. The question is, how ferocious is the white queen? Will it cause too many problems with the distribution of material? To my eyes, I don't know. I'm really not sure. I sort of like black -- I didn't like black at all a second ago, but now I'm starting to feel a bit more comfortable, just a little bit.

YASSER SEIRAWAN: Well, I'll tell you, in general, it's better --

GK MOVE: 17...exf5

MAURICE ASHLEY: He has taken the bishop.

MIKE VALVO:

YASSER SEIRAWAN: And in fact he had no choice. I would say in general, three pieces for the queen favor the three pieces. A rook and two pieces for the queen really favors the three pieces. However, that's not the overall determining factor in this particular position. First of all, Deep Blue will have two pawns for the queen. But far more importantly, that black king is exposed on c8. Even if it gets to b7. Let's look at the situation we were just looking at --

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