Commentary for white move 8:

GK MOVE: 8 Bg2

MAURICE ASHLEY: Kasparov didn't need to think too long about that lemon and moved back Bg2.

YASSER SEIRAWAN: I actually think Ne5 is a good move, and that's one of the reasons why I didn't like e2-e4, although I didn't mention that, of course --

MAURICE ASHLEY: You're keeping secrets from us, Yaz. You can't do that.

YASSER SEIRAWAN: If you just look at the position two moves ago from Deep Blue's perspective, we know that the computer has a prejudice for bishops. So we could assume that the computer might like to go after Garry's bishop with the move Nd5-E. And you're right, Maurice, as a teacher, the principle is not to move a piece that is already developed /TPWAOEUS in the -- twice in the opening because you'll waste time. Garry, to preserve his bishop had to retreat it, and this is the position that Deep Blue was contemplating. Deep Blue is now contemplating d5xe4, giving Garry the choice. If Garry wants, he can capture the pawn on e4 with his bishop, but then he in turn has been moving his bishop back and forth, and then Deep Blue gets to say to itself, "Well, I want that bishop. I'll /TPHOUR play Ng8-f6, attacking the bishop and setting up NxB, and if you, white, really want to preserve the bishop you're going to have to move it again, and so I gain time.

MIKE VALVO: Was that a great tap dance, or what? Wow.

MAURICE ASHLEY: The bishop went to g2, to f3, back to e2.

YASSER SEIRAWAN: He's spending time trying to keep his advantage of the two bishops. In this resulting position, you might say black has a fairly easy road to equality. The bishop would move to c5, Bf8-c5, and they're in development.

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