17...exf5?? loses queen and the game Deep Blue vs Kasparov, 1997  (B17) Caro-Kann, Steinitz Variation, 19 moves, 1-0 9 O-O, castling was the blunder in this game J Burt vs Blackburne, 1869   (C38) King's Gambit Accepted, 17 moves, 0-1 57, Kc2 loses the whole game! Bronstein vs Botvinnik, 1951  (B63) Sicilian, Richter-Rauzer Attack, 57 moves, 0-1 Black missed 36...bg1!! and instead resigned von Popiel vs G Marco, 1902  (C41) Philidor Defense, 36 moves, 1-0 34...Qe3?? Deep Fritz vs Kramnik, 2006  (D20) Queen's Gambit Accepted, 35 moves, 1-0 the great Petrosian plays 36.Ng5?? Petrosian vs Bronstein, 1956  (E66) King's Indian, Fianchetto, Yugoslav Panno, 36 moves, 0-1 Beliavsky plays the worst move possible in 69.Kf4?? A Beliavsky vs L E Johannessen, 2002  (D58) Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst, 69 moves, 0-1 54.gxh6+?? sometimes it is better not to take material Chandler vs S Polgar, 1987  (B33) Sicilian, 56 moves, 1/2-1/2 8 games