Polgar's only win in the 2005 WCC J Polgar vs Kasimdzhanov, 2005  (B81) Sicilian, Scheveningen, Keres Attack, 42 moves, 1-0 Topalov's only draw in the first half of the 2005 WCC Topalov vs Anand, 2005  (E15) Queen's Indian, 97 moves, 1/2-1/2 Nakamura's only classical win vs. Carlsen Carlsen vs Nakamura, 2016  (B20) Sicilian, 50 moves, 0-1 Reti's only win vs. Capablanca (ended his undefeated streak) Reti vs Capablanca, 1924  (A15) English, 31 moves, 1-0 Taimanov's only non-loss vs. Fischer in 8 games Taimanov vs Fischer, 1960  (E46) Nimzo-Indian, 87 moves, 1/2-1/2 Euwe's only win in the 1948 WCC Euwe vs Smyslov, 1948  (D99) Grunfeld Defense, Smyslov, 42 moves, 1-0 Adams' only win vs. Carlsen Adams vs Carlsen, 2010  (B06) Robatsch, 38 moves, 1-0 Adams' only points vs. Hydra (computer) Adams vs Hydra, 2005  (B47) Sicilian, Taimanov (Bastrikov) Variation, 65 moves, 1/2-1/2 Kasimdzhanov's only classical win vs. Topalov Kasimdzhanov vs Topalov, 2012  (D37) Queen's Gambit Declined, 23 moves, 1-0 The humans' only win in Man vs. Machine 2005 Ponomariov vs Fritz, 2005  (D02) Queen's Pawn Game, 48 moves, 1-0 Bogoljubov's only loss at 1922 Bad Pistyan (which he won) Tartakower vs Bogoljubov, 1922  (C46) Three Knights, 68 moves, 1-0 Saidy's only points vs. Fischer Fischer vs A Saidy, 1957  (B56) Sicilian, 46 moves, 1/2-1/2 Navara's only win at Tata Steel 2012 (and vs. the winner too!) Aronian vs Navara, 2012  (D85) Grunfeld, 60 moves, 0-1 Anderssen's only win vs. Murphy with black Morphy vs Anderssen, 1858  (C52) Evans Gambit, 72 moves, 0-1 Morphy's only loss vs. Paulsen AND at the ACC 1857 Paulsen vs Morphy, 1857  (C46) Three Knights, 34 moves, 1-0 Bisguier's only win vs. Fischer A Bisguier vs Fischer, 1956  (E78) King's Indian, Four Pawns Attack, with Be2 and Nf3, 33 moves, 1-0 Boden's only win vs. Morphy S Boden vs Morphy, 1858  (C41) Philidor Defense, 41 moves, 1-0 Maghsoodloo's only loss at the 2018 World Junior Championship A Esipenko vs P Maghsoodloo, 2018  (E10) Queen's Pawn Game, 56 moves, 1-0 Kramnik's and Kasparov's only 0-1 matchup in classical chess Kasparov vs Kramnik, 1996  (D47) Queen's Gambit Declined Semi-Slav, 35 moves, 0-1 Ivanchuk's only black classical win vs. Kasparov Kasparov vs Ivanchuk, 1995   (C16) French, Winawer, 31 moves, 0-1 Only black loss for Fischer at US Championships Reshevsky vs Fischer, 1965  (E43) Nimzo-Indian, Fischer Variation, 61 moves, 1-0 Fischer's only loss vs. Mednis and at 1962 US Championship Fischer vs E Mednis, 1962  (C18) French, Winawer, 73 moves, 0-1 Only time Janowski didn't lose with black in the 1910 WCC match Lasker vs Janowski, 1910  (D60) Queen's Gambit Declined, Orthodox Defense, 101 moves, 1/2-1/2 23 games