Details about the events at Aeroflot Open

letter by Shakhriyar Mamedyarov

Following the chess media, I noticed that there are a lot of things about the game with GM Kurnosov that are still unclear and I would like to bring some clarification. After the end, I once again carefully reviewed the games with GM Kurnosov played up to round 6 and afterwards as well. As a result there are facts. In the second round in the game Onischuk – Kurnosov, Onischuk applied a novelty on move 13 and after this move until the end of the game (27 moves total), Kurnosov makes moves strictly from hte first line of Rybka and wins in a beautiful style.

Two rounds after he again has black and again it is a Gruenfeld in the Moiseenko – Kurnosov game. Moiseenko makes a novelty on move 12 and again until move 25 Kurnosov plays the first line of Rybka. But in this game he could not win as Moiseenko had a very simple position without risks. But I also think that the latest position of the black could play to win…

In the 6 th round, against me Kurnosov plays again and wins playing on the first line of Rybka. In all the three games, very few moves were made on the second line of Rybka. In my game and Onischuk’s game we sacrificed pawns, and in such positions the computer needs several moves to build good defence and wins thanks to counterattack.

Thus, in the 8th round after Kurnosov was under close scrutiny of judges and chess fans, he played at a very low level and suffered a defeat. And it seems to me that this is clear indication that Kurnosov used a computer program, leaving the tournament hall practically after every move and having such confidence in himself declining a draw offer at move 14 against me in a practically equal position.

I hope that all of these details will be analyzed and understood by all chess fans I have no doubt that in the future, organizers of tournaments will take into account such nuances, that affect negatively the image of chess.

Shakhriyar Mamedyarov,

March 2009

Ed. note: The article is translation of the Russian version sent by GM Mamedyarov to Here is the chronology so far:

GM Mamedyarov quits Aeroflot, writes open letter

GM Kurnosov replies to Mamedyarov and chess fans