According to GM Mamedyarov, he felt the following circumstances pointed towards his opponent somehow getting computer assistance during the game in a letter he wrote:
To: The organizer of the AEROFLOT-OPEN tournamentAlexander Grigorievich
From: GM Shakhriyar Mamedyarov
Explanation of my protest
Dear Alexander Grigorievich,
On 22.09.2009 the game between myself and Igor
Kurnosov was played. During the game my opponent went out of the playing hall
after each move, took his coat and withdrew himself on the toilet. After
suspicion of unfair play on move 14 I offered a draw, he refused. We quickly
played 11 moves, on the 12th move I played a move which confused my opponent.
The next moves from him were given as first choice by Rybka, which quickly
allowed him to win the game.
Due to this series of suspicions, having to do with the unusual behaviour of my opponent, Igor Kurnosov, I hereby lodge a protest and refuse to continue participation in the tournament. I hope that his kind of situation will not occur in the future.
When the chief arbiter asked to see the contents of Kurnosov's jacket, all that was found was some ciggaretes, a lighter, and a pencil.
Here is the game data:
Shakhriyar Mamedyarov (2724) - Igor Kurnosov (2602)
1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. Be3 O-O 8. Qd2Nc6 9. O-O-O f5 10. h4 fxe4 11. h5 gxh5 12. d5 Ne5 13. Bh6 Nec4 14. Qg5 Rf7 15.Bxc4 Nxc4 16. Rd4 Qd6 17. Bxg7 Rxg7 18. Qxh5 Qf4+ 19. Kb1 Bf5 20. fxe4 Bg4 21.Nge2 Qd2 0-1*
Any thoughts on this interesting development in the chess world?