33 Bxe4+! Bxe4 g4+ removes the guard or mates Alekhine vs Tartakower, 1930  (A90) Dutch, 50 moves, 1-0 f6-sq S Novikov vs Efimenko, 2010  (A29) English, Four Knights, Kingside Fianchetto, 34 moves, 1-0 c2-sq Grischuk vs V Gashimov, 2010  (A62) Benoni, Fianchetto Variation, 40 moves, 1-0 33 ... c2+! 34 Rxc2? Qe1+ trades down on loose the c2-square Van Wely vs Topalov, 1997  (A70) Benoni, Classical with 7.Nf3, 35 moves, 0-1 41 - c1=Q+! 42 Rxc1 Qxd2+ trades down on loose c1-square Predojevic vs Carlsen, 2006  (B96) Sicilian, Najdorf, 40 moves, 0-1 57 ... Rf1+! 58 Rxf1 Qe3+ trades down on loose promotion square Y Visser vs Adams, 2006  (C90) Ruy Lopez, Closed, 57 moves, 0-1 23 - Nxf2! 24 Rxf2 trades down on f2, 24 - Rg4! removes guard Kamsky vs F Doettling, 2006  (B12) Caro-Kann Defense, 39 moves, 0-1 37 Re8+! trades down on loose two attackers, two defenders e8 W Schmidt vs J Augustin, 1976  (A04) Reti Opening, 38 moves, 1-0 24 Bxf7+! and then 24 ... Rxf7 25 Qd8+ removes the guard Y Hou vs N Zhukova, 2006  (C26) Vienna, 32 moves, 1-0 32 Bxd6! and 1-0 since 32 ... Qxd6 33 Rf7+ removes the guard Capablanca vs Menchik, 1935  (E85) King's Indian, Samisch, Orthodox Variation, 32 moves, 1-0 60 ... Bd6xg3! Petrosian vs Larsen, 1966  (A16) English, 61 moves, 0-1 38 ... Bg7-c3+! Topalov vs Kramnik, 1995  (B57) Sicilian, 40 moves, 0-1 15 ... Bg7xc3! is followed by 16 ... Qd8-d4 forking c3, pinning Tiviakov vs Shirov, 2010  (B25) Sicilian, Closed, 31 moves, 0-1 Adams vs Areshchenko, 2010  (B90) Sicilian, Najdorf, 51 moves, 0-1 Karjakin vs Shirov, 2010  (C69) Ruy Lopez, Exchange, Gligoric Variation, 37 moves, 1-0 Caruana vs Giri, 2012  (D11) Queen's Gambit Declined Slav, 41 moves, 1-0 64 Nf4-e6?? e6 is loose, Rh6-h7+ will remove guard, but N fork! N Grandelius vs H Melkumyan, 2012  (D37) Queen's Gambit Declined, 66 moves, 0-1 17 games