Interference 20 ... Nc6-d4! based on rooks protecting d5-bishop A Timofeev vs Jakovenko, 2012  (D16) Queen's Gambit Declined Slav, 29 moves, 0-1 I Sokolov vs L Aroshidze, 2012  (E48) Nimzo-Indian, 4.e3 O-O 5.Bd3 d5, 43 moves, 0-1 Grischuk vs Ivanchuk, 2012  (C62) Ruy Lopez, Old Steinitz Defense, 36 moves, 1-0 3 games