34.Bg3-h5! cuts off defense of g7, also defends b2 Miles vs C Pritchett, 1982  (D01) Richter-Veresov Attack, 34 moves, 1-0 31.e5 blocks defense by B/b2 on f6 Piket vs Kramnik, 1999  (D45) Queen's Gambit Declined Semi-Slav, 34 moves, 1-0 17...Rf8-f3 forces White to cut off his defenders S Bartha vs G Kluger, 1979  (A40) Queen's Pawn Game, 30 moves, 0-1 36.Rc6 interferes with Black's defence vs mate Navara vs A Dergatschova, 2007  (D07) Queen's Gambit Declined, Chigorin Defense, 36 moves, 1-0 31.Bc7 Plachutta Tarrasch vs Marotti / Napoli / de Simone / del, 1914   (A03) Bird's Opening, 31 moves, 1-0 22...Bb6-d4! foils the B&Q battery on a1-h8 diagonal Winawer vs Chigorin, 1882  (C51) Evans Gambit, 28 moves, 0-1 6 games