42 ... Re7-g7 defends threat to g8-sq Rg3-g8# by blocking @ g2 Pillsbury vs Tarrasch, 1895  (D63) Queen's Gambit Declined, Orthodox Defense, 52 moves, 1-0 Topalov overlooked 64 ... Qd7-d5+, 67 ... Qd5-g8 interposing Carlsen vs Topalov, 2007  (D45) Queen's Gambit Declined Semi-Slav, 64 moves, 1-0 18 Nf3-h4 defends threat to h3-sq from h5-rook by blocking @ h4 Gelfand vs Grischuk, 2011  (D76) Neo-Grunfeld, 6.cd Nxd5, 7.O-O Nb6, 35 moves, 1-0 Kramnik vs Ivanchuk, 2008  (D93) Grunfeld, with Bf4 & e3, 43 moves, 0-1 29 Bh7-f5!: e5-h5@f5 J Gustafsson vs Efimenko, 2011  (D37) Queen's Gambit Declined, 32 moves, 1-0 31 Re5-g5, 32 Ng4-e5 interpose attacks on h4-queen,h2-flight sq Jobava vs A Volokitin, 2011  (E54) Nimzo-Indian, 4.e3, Gligoric System, 35 moves, 1-0 the losing move was gelfand's last one, Rc2. Rd6 seems to hold Gelfand vs Nakamura, 2012  (A88) Dutch, Leningrad, Main Variation with c6, 35 moves, 0-1 Navara vs Carlsen, 2012  (D45) Queen's Gambit Declined Semi-Slav, 82 moves, 1/2-1/2 28 Ne2-c3! defends d2-sq from Black b4-queen: b4-d2@c3 Giri vs Aronian, 2012  (D37) Queen's Gambit Declined, 43 moves, 0-1 Y Hou vs Le Quang Liem, 2012  (B93) Sicilian, Najdorf, 6.f4, 40 moves, 1-0 D Andreikin vs Eljanov, 2012  (B10) Caro-Kann, 46 moves, 1/2-1/2 H Melkumyan vs G N Gopal, 2012  (D45) Queen's Gambit Declined Semi-Slav, 75 moves, 1-0 30 - Rd8 interpose: a8-h8@d8+e7,32 - Rd7 interpose: a7-e7@d7+e6 Grischuk vs Bologan, 2012  (B12) Caro-Kann Defense, 33 moves, 1-0 E Najer vs H Melkumyan, 2012  (C52) Evans Gambit, 59 moves, 1/2-1/2 Paulsen vs Anderssen, 1877  (C45) Scotch Game, 27 moves, 1-0 21.Nc5 White successfully holds the b4 pawn.-- CEWN Jakovenko vs Onischuk, 2012  (D37) Queen's Gambit Declined, 32 moves, 1-0 17 ... Nd7-e5 shields the Black b8-rook,c7-queen from g3-bishop Morozevich vs Dominguez Perez, 2012  (D85) Grunfeld, 29 moves, 1-0 21 ... Rd5-b5 defends a6-sq by interposing the White e2-queen H Wang vs Kasimdzhanov, 2012  (C45) Scotch Game, 40 moves, 0-1 25 ... Nd6-f5 f1->f6@f5+g4 shields Black f6-knight from f1-rook Euwe vs Breyer, 1921  (B00) Uncommon King's Pawn Opening, 30 moves, 0-1 19 .. Ng8-f6 meets threat of Bc1-b2 skewer by shielding h8-rook J Corzo vs Capablanca, 1901  (C25) Vienna, 26 moves, 0-1 18 ... Be2-d1! 0-1 shuts out d1-queen, forcing a back rank mate V Shvydenko vs Levertov, 1963  (C58) Two Knights, 18 moves, 0-1 20 B1-f4 f6->f2@f4+g3 Mamedyarov vs Topalov, 2013  (E32) Nimzo-Indian, Classical, 24 moves, 1-0 35 Nh4-g2! f2->h2@g2+g1,h1 shields the h2-mating sq from attack H Wang vs Kamsky, 2013  (E21) Nimzo-Indian, Three Knights, 42 moves, 1-0 19 Qa4-b5! b6->b2@b5+c3 Ivanchuk vs Morozevich, 2013  (D02) Queen's Pawn Game, 49 moves, 1-0 35 ... Bc7-d8 a8->g8@d8+d6,d4 shield Black g8-king from a8-rook V Gunina vs L Rogule, 2013  (D43) Queen's Gambit Declined Semi-Slav, 45 moves, 0-1 20 ... g6-g5 e3->h6@g5+e7 shields Black h6-knight from e3-queen Ding Liren vs Vachier-Lagrave, 2013  (A35) English, Symmetrical, 28 moves, 1-0 22 Rb7-d7 shields/interposes the White d2-queen from d8-rook Kramnik vs H Wang, 2013  (D16) Queen's Gambit Declined Slav, 26 moves, 1-0 25 d4-d5! b7->h1@d5+g8, 29 Re1-e3! d4->f2@e3+f2 Bacrot vs Rapport, 2013  (D44) Queen's Gambit Declined Semi-Slav, 35 moves, 1-0 43 ... Nc4-e5 f4->b8@e5+f6 blocks guard line to trapped b8-N Caruana vs Adams, 2013  (C67) Ruy Lopez, 41 moves, 0-1 32 Rd8-d6! breaks communication from Black a6-queen to f6-pawn A Kashlinskaya vs E Paehtz, 2013  (E46) Nimzo-Indian, 36 moves, 1-0 20 Nc4-e3 e8->e2@e3+f2 shields White e2-bishop from e8-rook W Ju vs L Javakhishvili, 2011  (D44) Queen's Gambit Declined Semi-Slav, 56 moves, 1-0 32 f4-f5! blocks the guard line from h5-rook to loose c5-bishop Radjabov vs Rapport, 2013  (A06) Reti Opening, 34 moves, 1/2-1/2 32 games