FIDE World Chess Championship 2004

The FIDE World Chess Championship 2004 was held at the Almahary Hotel in Tripoli, Libya, from June 18 to July 13.

It was won by Rustam Kasimdzhanov, who beat Michael Adams in the final by a score of 4½–3½. He won about US$100,000 and the title of FIDE World Chess Champion.

The intention was that the tournament winner would play world number one Garry Kasparov in a step towards the reunification of the World Chess Championship, which had been split into two separate titles since the World Chess Championship 1993. However, that match never took place.

Ever since 1993, when Garry Kasparov and Nigel Short broke away from chess governing body FIDE to play their world championship match under the auspices of the newly formed Professional Chess Association, there had been two chess world championships: one organised by FIDE (which used the knock-out format from 1998 to 2004) and one by a variety of other bodies (in the form of a long match between champion and challenger). The 2004 FIDE Championship was a part of what was, at the time, the most serious attempt yet to reunify the title, the so-called Prague Agreement.

The plan under this agreement when it was drawn up in 2002 was that reigning FIDE world champion Ruslan Ponomariov and world number one on the FIDE Elo rating list Garry Kasparov played a match, and that the so-called "classical" world champion Vladimir Kramnik and winner of the 2002 Dortmund tournament (which turned out to be Péter Lékó) played each other. The winners of these two matches would then play one another to produce a unified champion.

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