Commentary for white move 37:

YASSER SEIRAWAN: Well, he really, really emphasizes it. And I remember /PHRAEURG Garry at Telefeo in Sweden in 1989. It was an absolutely crazy game, one of those been on -- Benoni structures where anything can happen. And Garry played a move that was amazing, played c5-c4 and went bam, really, really screwed it into the board. The whole table shook, and it was a mistake, I loved it.

DB MOVE: 36...Nb5

GK MOVE: 37 cxb5

PATRICK WOLFF: I would think Rg6 here, wouldn't you? Well, this is going with check.

YASSER SEIRAWAN: Okay, we're anticipating now, after they recapture the bishop, why don't you play check on e7?

PATRICK WOLFF: Well, then because Rd7.

YASSER SEIRAWAN: Okay. And then if I capture the rook. And now I play Nf5. g6. And then knight back. We're now in a knight ending. How is the database on knight endings? Knight back to e4, Nxg6. Any chances of winning a pawn here for white?

MIKE VALVO: He can play Nf4 --

PATRICK WOLFF: Ng3 might be correct.

YASSER SEIRAWAN: Okay, Nf4. We're looking as deeply as we possibly can.

PATRICK WOLFF: Yeah. The explanation for what we're doing here is -- g6 h4 --

YASSER SEIRAWAN: g7.

PATRICK WOLFF: Nf6. The king is very fast.

YASSER SEIRAWAN: So we just looked at an analysis for those on our web site that are following this, of moving into a knight ending, and we anticipated that it would be equal. So we're taking back the move Re7+ and we're looking at now Rg6.

PATRICK WOLFF: By the way I should say the explanation for what we're doing here is we've reached the kind of endgame where white has potential dynamic possibility of pushing this pawn. Everything is going to depend on white trying to do something to knock out this weak black pawn and push this pawn. In fact, it's going to be worth oftentimes for white one or two pawns if he can get this guy going fast. So we're looking at all those ways that seem plausible for us where white can knock this g7 pawn out and try to get this guy going as fast as possible. One thing that perhaps Kasparov is hoping from Deep Blue is Deep Blue may put too much emphasis on the number of pawns and may not recognize the importance of one particular strong passed pawn, or potential passed pawn like this one. So, for example, this move Rg6 --

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