Chigorin himself - Exchange Var. Steinitz vs Chigorin, 1898  (D07) Queen's Gambit Declined, Chigorin Defense, 41 moves, 1-0 4. e3 Blockade Ctr Pawn Thrust. Khalifman vs Morozevich, 1995 (D07) Queen's Gambit Declined, Chigorin Defense, 50 moves, 1/2-1/2 V Babula Sr vs L Klima, 2005 (D07) Queen's Gambit Declined, Chigorin Defense, 47 moves, 1-0 Early e3 Mamedyarov vs Morozevich, 2008  (D07) Queen's Gambit Declined, Chigorin Defense, 71 moves, 1/2-1/2 4 games