Kasparov and Topalov are fighting again. This time in Chess960, with $144,000 on the line.

The two former world champions will play a 12-game match in St. Louis. Kasparov, who ruled the classical game for two decades before his 2000 retirement, meets Topalov in a format where both players start from random positions each game. No opening preparation. No studying move 15 novelties for three weeks. Just chess.

This isn't a nostalgic exhibition. These names carry real weight. Kasparov dominated the 1990s with a combination of preparation, calculation, and aggression that made him nearly untouchable. Topalov emerged in that same decade as perhaps the only player who could genuinely threaten him. Their battles shaped how people understood elite chess.

The last classical game between them carries extra meaning. Topalov defeated Kasparov in what turned out to be Kasparov's final rated classical game before retirement. That victory sits in both their records as a punctuation mark on their rivalry.

Chess960, also called Fischer Random Chess, neutralizes the opening advantage that Kasparov spent his entire career perfecting. Kasparov's preparation was legendary. His opening knowledge across all three openings was encyclopedic. Fischer Random strips that away completely. Every game starts from an unfamiliar position. No patterns apply. The player with superior calculation and chess intuition has the edge, not the one with the better memory.

For Kasparov, now in his 60s, this format presents a different kind of challenge. He won't rely on the 25 moves of pre-analysis that dominated his classical career. Topalov, too, will need to function without his usual opening frameworks. Both players must think independently from move one.

The $144,000 purse tells you St. Louis takes this seriously. The city has positioned itself as America's chess capital through the Chess Club and the annual Sinquefield Cup. Pairing two legends in a unique format, even years after their peak years, generates interest from chess fans who respect the history and the innovation.

Match dates haven't been announced yet. When they are, expect serious preparation. Neither player will treat this as a casual retirement tour game. Kasparov never conceded anything in his career. Topalov won't either. Chess960 removes the opening, but it can't remove the competitive fire that built their reputations in the first place.