26 Rc1-c7! Black e7-queen cannot defend both e6-base, c7-target Adams vs S Vanderwaeren, 1994  (C00) French Defense, 27 moves, 1-0 29 Rg2-g5!! Black f5-queen cannot defend both f7-base,g5-target Aronian vs H Stefansson, 2004  (D45) Queen's Gambit Declined Semi-Slav, 40 moves, 1-0 18 ... Bd6-e5! White d4-queen cannot defend d3-base,e5-target A Adly vs M Sebag, 2008  (D45) Queen's Gambit Declined Semi-Slav, 50 moves, 0-1 26 Nc4-b6! Black d8-queen cannot defend both d7-base,b6-target Carlsen vs Karjakin, 2009  (D11) Queen's Gambit Declined Slav, 79 moves, 1/2-1/2 19 Ne4-d6!! Black e6-queen cannot defend f7-base, d6-target Short vs Timman, 2008  (C67) Ruy Lopez, 40 moves, 0-1 43 ... Rh2-h1+! White g1-king cannot defend f2-base,h1-target P H Nielsen vs Z Izoria, 2008  (E15) Queen's Indian, 52 moves, 1/2-1/2 6 games