18 Ne5xc6! Black c7-queen protects a5-rook from White d2-queen Caruana vs Giri, 2012  (D11) Queen's Gambit Declined Slav, 41 moves, 1-0 27 e6-e7! Black c7-queen protect b8-rook from White b5-queen S Sjugirov vs Shirov, 2011  (C78) Ruy Lopez, 45 moves, 1-0 38 Nc6-d8! Black e8-queen protects e6-rook from White d5-queen Keres vs A Tarnowski, 1952  (C86) Ruy Lopez, Worrall Attack, 40 moves, 1-0 21 ... Re8-e3! White d3-queen protects c2-rook from a2-queen Szabo vs Fischer, 1960  (E70) King's Indian, 24 moves, 0-1 Sutovsky vs Z Kozul, 2012  (B67) Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7, 36 moves, 1-0 R Leitao vs A Timofeev, 2009  (A48) King's Indian, 50 moves, 0-1 6 games