29 .. f7-f5! White g5-rook is cut off along 5th rank from a5-e5 B Jacobsen vs A Chernin, 2009 (A07) King's Indian Attack, 29 moves, 0-1 36 ... Bc7-b6! White b7-rook is cut off along b-file from b5-b1 M Richter vs S Ionov, 2010  (D27) Queen's Gambit Accepted, Classical, 43 moves, 0-1 29 Bg5-h4! blocks retreat of Black h3-queen along the h-file Ljubojevic vs W So, 2010  (A15) English, 32 moves, 1-0