Commentary for black move 13:

But beyond that, you want to determine what you want to do with your king. After the move h3-h4, it's quite clear that white's king is not going on the king-side. That pawn shield out there in front of the king would not provide enough cover. We can certainly expect /TKHA in the near future Deep Blue will castle queen-side. That having been said, the move --

GK MOVE: 13...Na6.

YASSER SEIRAWAN: -- the move h3-h4 is preparing to open things on the king-side.

MAURICE ASHLEY: And in fact he has done so, Nb8-a6 has been played by Kasparov, and he's cleared the line now, as has white, to castle queen-side and both kings will be brought to safety behind that pawn shield. Will Garry, though, be pursuing play -- now that we know where the kings are going, where will Kasparov pursue play? It seems as if /TK-P Deep Blue has already shown us where it wants to go, that is, the right half of the board. But where is black going to get counter play from?

Real-time text commentary is made possible by LiveNote, Inc. and Vincent Varallo Associates