w to mate move 20 Keres vs A Peet, 1932  (C25) Vienna, 19 moves, 1-0 w mate on move 60 Silman vs L Day, 1975  (C72) Ruy Lopez, Modern Steinitz Defense, 5.O-O, 59 moves, 1-0 w31 Potkin vs Caruana, 2010  (D12) Queen's Gambit Declined Slav, 30 moves, 0-1 3 games