Commentary for black move 23:

MIKE VALVO: Well, the programmers must have changed the opening book.

ROMAN DZINDZIHASHVILI: Well, it's not only opening book. It's been playing positions like this where there is no clear -- there is no views for opening positions in near future, and there is no clear plan. DB MOVE: 23...Qxa3.

MIKE VALVO: He took it? Oh, dear!

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