An unnamed participant in the World Chess Championship in San Luis, Argentina, has accused Chess King Bulgarian Vesselin Topalov of using unallowed measures to win the title, index.hu reported.

According to the article published on the site the allegations remained secret because of "games behind the curtain." Such allegations, however, are common for the chess world.

It is not clear who has raised the allegations against the Chess King, but this man claims that during several games aide Ivan Cheparinov and manager Silvio Danailov have helped Topalov.

The site reports that after each move of Topalov, Cheparinov has used computer analysis of the game and has then secretly signaled the chess king for the next move.

Peter Leko has also voiced his suspicions that Topalov has used unfair advantage by sitting on the same place during the entire championship. FIDE however, has not undertaken any measures due to lack of evidence.

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