Check discovered Dubov vs A Brkic, 2016  (D30) Queen's Gambit Declined, 26 moves, 1-0 Pin A Sokolov vs Naiditsch, 2015  (C41) Philidor Defense, 40 moves, 1-0 Deflexion Benjamin vs Mephisto, 1987  (D99) Grunfeld Defense, Smyslov, 37 moves, 1-0 Combination, start with a black queen double attack that A Kovchan vs A Volokitin, 2015  (B84) Sicilian, Scheveningen, 35 moves, 0-1 4 games