Controversy of Krush's lost move in Kasparov
Commentary and links to articles on the controversy: Krush recommended a move that (many feel) would have prevented Kasparov from winning. Her move was not shown in time, and a different move was played.
Irina Krush Biography
Biography of leading Kasparov v. the world commentator Irina Krush (her move recommendations were played 53 of 57 times).