4 Bf4? g5! L Mkrtchian vs A Bezgodov, 2007 (D08) Queen's Gambit Declined, Albin Counter Gambit, 73 moves, 1/2-1/2 4 f4 Bg4 L Merenyi vs J Szekely, 1906  (D08) Queen's Gambit Declined, Albin Counter Gambit, 19 moves, 0-1 2 games