29. O-O-O with ♞ on d2! E Diemer vs F Trommsdorf, 1973  (B07) Pirc, 47 moves, 1/2-1/2 17...O-O-O with ♘ on d7! Uhlmann vs V Kovacevic, 1970 (D38) Queen's Gambit Declined, Ragozin Variation, 40 moves, 0-1 12...O-O-O with ♘ on d7! A Yusupov vs G Hertneck, 1993 (D17) Queen's Gambit Declined Slav, 28 moves, 1-0 11...O-O-O with ♘ on d7! Sosonko vs Petursson, 1992 (D17) Queen's Gambit Declined Slav, 28 moves, 0-1 16...O-O-O with ♘ on d7?! Azmaiparashvili vs Ivanchuk, 1989  (D17) Queen's Gambit Declined Slav, 41 moves, 1/2-1/2 12...O-O with ♘ on f7! F A Hoffmann vs A Petrov, 1844  (C53) Giuoco Piano, 20 moves, 0-1 13. O-O with ♜ on h2! Van der Wiel vs Karpov, 1987  (B17) Caro-Kann, Steinitz Variation, 30 moves, 1/2-1/2 19. O-O with ♞ on f2! M Bartel vs N Miezis, 2013 (E38) Nimzo-Indian, Classical, 4...c5, 30 moves, 1-0 15. O-O with ♞ on f2! S Atalik vs J Arosemena, 2006  (E38) Nimzo-Indian, Classical, 4...c5, 21 moves, 1-0 17. O-O with ♞ on f2! Lautier vs Adams, 1990 (A41) Queen's Pawn Game (with ...d6), 51 moves, 1-0 13. O-O-O+ with ♜ on b2! Adams vs Dreev, 1997  (B58) Sicilian, 54 moves, 1-0 19. O-O-O! followed by ♜xa2 20. ♔b1 Fischer vs Tal, 1961  (B47) Sicilian, Taimanov (Bastrikov) Variation, 47 moves, 1-0 15. O-O-O followed by ♛xa2 Chandler vs Speelman, 1984 (B17) Caro-Kann, Steinitz Variation, 28 moves, 1/2-1/2 15. O-O-O followed by ♛xa2 Adorjan vs J Flesch, 1975  (B17) Caro-Kann, Steinitz Variation, 31 moves, 1-0 11. O-O-O ♝xd2 12. ♖xd2 ♛xa2 Plachetka vs M Diesen, 1978  (D43) Queen's Gambit Declined Semi-Slav, 35 moves, 1-0 16...O-O! A Rhode vs Zitzewitz, 1910  (B01) Scandinavian, 18 moves, 0-1 15...O-O-O! Vyzmanavin vs Ivanchuk, 1986  (D44) Queen's Gambit Declined Semi-Slav, 31 moves, 1/2-1/2 17 games