Commentary for black move 29:

YASSER SEIRAWAN: a5 for black. That would have been a very interesting decision. The idea of a5 for black is that this bishop on f8 is on this diagonal, the f8-a3 diagonal, so white cannot just capture the pawn on a5 because his rook would be exposed. Probably after the move a5, a tack cal line like ba -- we do have a move by the way. The move is Be3-b6.

YASSER SEIRAWAN: a5 looks like a very reasonable idea. Thank you. I'm not sure why Garry rejected that.

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