29 b3-b4! Black c5-pawn defender of pinned d4-knight Anand vs Svidler, 2009  (D85) Grunfeld, 32 moves, 1-0 21 ... Bc8-f5! White e4-bishop defender of f3-forking square Karjakin vs Carlsen, 2009  (B20) Sicilian, 23 moves, 0-1 70 ... Nb3-d1! White d3-knight defender of loose e5-rook Kasimdzhanov vs Kamsky, 2010  (C78) Ruy Lopez, 70 moves, 0-1 21 Nf3-g5! Black f7-knight defender of d6-trapping square McShane vs Wojtaszek, 2011  (B23) Sicilian, Closed, 38 moves, 1-0 32 Bh3xNg4, 33 h2-h3 Black g4-knight defender of e5-fork square So vs Navara, 2011  (D76) Neo-Grunfeld, 6.cd Nxd5, 7.O-O Nb6, 34 moves, 1-0 36 - Bf8-e7, 37 - Be7-g5 White d2-knight defender of c4-skewer Grischuk vs Aronian, 2011  (C85) Ruy Lopez, Exchange Variation Doubly Deferred (DERLD), 49 moves, 0-1 V Gashimov vs Ivanchuk, 2011  (B84) Sicilian, Scheveningen, 33 moves, 1-0 7 games