29 ... Ne4-d2! White e1-bishop,f3-knight defend other squares Gelfand vs Carlsen, 2010  (D37) Queen's Gambit Declined, 33 moves, 1/2-1/2 30 ... Nh5-g3+! both White g2-queen,h2-pawn must block lines Gelfand vs Aronian, 2006  (A56) Benoni Defense, 45 moves, 0-1 25 ... Be7xg5! White f4-pawn,f3-knight pinned to h2-,h1-squares Anand vs Carlsen, 2009  (B30) Sicilian, 34 moves, 0-1 50 .. Nd5-e3! White f3-rook defends f2, f2-pawn blocks 2nd rank A Yusupov vs Topalov, 1993  (A48) King's Indian, 50 moves, 0-1 29 Rg2-g5!! Black e4-knight pinned, f5-queen defends f7-base Aronian vs H Stefansson, 2004  (D45) Queen's Gambit Declined Semi-Slav, 40 moves, 1-0 31 .. Ne5-f3+! White g2-pawn shields g1-kind, d1-Q defends d2-R J Gil Capape vs Anand, 1986  (D27) Queen's Gambit Accepted, Classical, 31 moves, 0-1 61 Nd5-b6! Black a7-pawn blockades, Black c6-rook defends c8-sq S Volkov vs Y Hou, 2008  (E20) Nimzo-Indian, 61 moves, 1-0 38 Rb6xh6+! Black g7-pawn blocks g-file, h7-king defends h8-sq B Grachev vs V Akobian, 2009  (D37) Queen's Gambit Declined, 38 moves, 1-0 34 ... Rg4xf4+! White g2-knight pinned to g1-rook, f3-king no d Janowski vs Capablanca, 1916   (D15) Queen's Gambit Declined Slav, 46 moves, 0-1 41 ... Qf2-f4+!!? White f5-rook defends mate sq, g3-pawn shield Gelfand vs Shirov, 2007  (D85) Grunfeld, 54 moves, 0-1 31 Rf1-g1! both Black c5-bishop, g6-queen defend mate squares D Stets vs M Oleksienko, 2009  (B80) Sicilian, Scheveningen, 30 moves, 1-0 39 ... Rd3xh3+!! g2-pawn defends f3-base, h2-king will be mated I Morovic Fernandez vs Rublevsky, 2009  (D20) Queen's Gambit Accepted, 39 moves, 0-1 26 Bb3xf7+!! Black c7-queen,f8-rook needed to defend d8-rook Alekhine vs K Junge, 1942   (C86) Ruy Lopez, Worrall Attack, 28 moves, 1-0 32 ... Qc4-f1+!! is a crushing shot that Nepomniachtchi missed E Najer vs Nepomniachtchi, 2006  (C12) French, McCutcheon, 67 moves, 1-0 32 Rg1-g6!! f7-queen protects f8-mate sq, h7-pawn blocks h8-sq J Polgar vs Gelfand, 2009  (C24) Bishop's Opening, 32 moves, 1-0 37 Rb7-e7!! e8-rook protects c8-sq, f6-queen interposes g7-sq Kamsky vs B Esen, 2010  (A43) Old Benoni, 60 moves, 1-0 33 ... Ne5-f3+! 0-1 c3-rook guards c2-queen, g2-pawn inter h2-k M Bluvshtein vs D Andreikin, 2011  (E46) Nimzo-Indian, 33 moves, 0-1 17 games