21 ... e5-e4! strikes at White d3-pawn stabilizing c4-knight McShane vs Aronian, 2012  (C78) Ruy Lopez, 76 moves, 0-1 30 h4-h5!, 31 c4-c5! remove foundation of Black e5-, f5-knights Capablanca vs Milner-Barry, 1936  (A25) English, 36 moves, 1-0 27 h4-h5! if Black g6-pawn goes, so does Black f5-knight Karpov vs J Polgar, 1994  (E62) King's Indian, Fianchetto, 28 moves, 1-0 87 f4-f5! destabilizes Black d5-bishop by attacking e6-pawn Radjabov vs Anand, 2008  (D44) Queen's Gambit Declined Semi-Slav, 85 moves, 1-0 22 e5-e6 prevents ... e7-e6, supporting pinned Black d5-bishop M Pavlovic vs Carlsen, 2004  (B31) Sicilian, Rossolimo Variation, 33 moves, 0-1 29 d4-d5+! strikes at the Black e6-pawn foundation of f5-pawn Carlsen vs C Ward, 2003  (E21) Nimzo-Indian, Three Knights, 39 moves, 1-0 25 - Nd4-f3 Black e4-foundation pawn cannot be attacked by pawn E Alekseev vs Carlsen, 2008  (E15) Queen's Indian, 47 moves, 1/2-1/2 23 c5-c6! strikes at Black b7-pawn that defends crucial a6-pawn Morozevich vs Kramnik, 2008  (D45) Queen's Gambit Declined Semi-Slav, 31 moves, 1-0 13 Be2xa6!! b7xa6 removes Black b7-foundation pawn of c6-knight Kramnik vs Anand, 2007  (A15) English, 21 moves, 1-0 27...a3! It is important to remove the foundation for the c3-N J Hobaica vs Aronian, 2007  (A15) English, 33 moves, 0-1 10 games