39 ... g6-g5?? exposes h6-king along 6th rank for 40 Rc8xNf8! Nakamura vs Carlsen, 2009  (D85) Grunfeld, 40 moves, 1-0 45 ... Qe4-d4?? exposes tender h7-sq along b1-h7 for 46 Qd2-c2! J L Hammer vs Carlsen, 2010  (A31) English, Symmetrical, Benoni Formation, 55 moves, 1-0 38 ... g6xf5? exposes undef g3-bishop on g-file to 40 Rh8-g8+ Short vs Mikhalevski, 2011  (C48) Four Knights, 39 moves, 1-0 3 games