Imagine a world championship match with no finish line. Not best of twelve, not best of twenty-four — first to six wins, draws worth nothing, no cap on games. That was the rule in 1984, and it produced the strangest title match in chess history.
The challenger was Garry Kasparov, a 21-year-old from Baku, brash and brilliant, with a gift for attack. The champion was Anatoly Karpov, 33, the most precise player of his generation, who had held the world title for nearly a decade. They sat down in Moscow on September 10, 1984, in the Pillar Hall of the House of Unions. The longest world title match ever played had been 34 games — Capablanca versus Alekhine in 1927. Nobody expected this one to come close.
Karpov struck first, with the calm of a machine. He won games 3, 6, 7, and 9 and led 4-0 inside the first three weeks. Kasparov then held on through seventeen consecutive draws until game 27, played on November 23, when Karpov's cold-blooded endgame play made it 5-0. One more win and the match — and the title — belonged to him. The chess world had already started writing off the challenger.
That sixth win never came. For the next twenty-one games, Karpov sat one victory away from the title and could not take it. Kasparov finally beat him in game 32, on December 12 — his first win of the match and his first ever against Karpov. Then fourteen more draws, a grey grind through a Moscow winter. By January the champion was running out of fuel: Karpov had lost ten kilos, about 22 pounds, and had not won a game since late November. Kasparov won game 47 on January 31 and game 48 on February 8. The score read 5-3, and the challenger carried all the momentum.
Then the match ended in a way nobody had ever seen — at a press conference. On February 15, 1985, FIDE president Florencio Campomanes called it off, citing the players' health after five months of play. Both players protested; both said they wanted to keep going. The decision had no precedent, and it never fully escaped suspicion of political pressure from Soviet officials who favored the champion. The title went undecided. It remains the only world championship match ever abandoned without a result: 48 games, 40 draws, five months, no winner.
The marathon rewrote the rules. FIDE scrapped the unlimited format, and the rematch in Moscow that autumn was capped at 24 games, with Karpov keeping the title if it ended 12-12. It went to the final game. Karpov needed a win to remain champion; Kasparov won instead, taking the match 13-11 and becoming, at 22, the youngest world champion in history.
The record still stands, and with the unlimited format gone, it is hard to imagine anyone breaking it — not because nobody is strong enough, but because the rules that made the marathon possible were buried with it. For the rest of us, the 1984 match leaves a simpler lesson: a lead is not a result. Karpov spent twenty-one games one win from the title and never crossed the line, and in the end the match was decided not on the board but in a press conference. Some titles, it turns out, go to whoever can still think clearly when everyone else has stopped.