25 ... e5-e4 creates an outpost on d3-square for a Black knight Gruenfeld vs Alekhine, 1923  (D64) Queen's Gambit Declined, Orthodox, Rubinstein Attack, 34 moves, 0-1 29 ... Nf2-d3+ Black e4-pawn turns d3-square into an outpost Ahues vs Alekhine, 1936  (D22) Queen's Gambit Accepted, 31 moves, 0-1 49 ... Rb6-b2! advanced Black a3-pawn make b2-sq into outpost Leko vs Kamsky, 2008  (C95) Ruy Lopez, Closed, Breyer, 61 moves, 0-1 21 Rg3-d3! White c5-pawn makes d6-square an outpost for d3-rook Morozevich vs Kramnik, 2008  (D45) Queen's Gambit Declined Semi-Slav, 31 moves, 1-0 4 games