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If you have plenty of time, play the main lines. That's what IM Van Delft recommends in his nice Schaaknieuws repertoire. I will give you a summary: Cordel (or whatever) 3...Bc5: 4.c3 and the sac from Topalov-Leko, 1999. See Mark Morss' website. Jänisch: 4.d3 fxe4 5.dxe4 Nf6 6.0-0 Bc5 7.Qd3 d6 8.Qc4. Berlin Wall: the infamous endgame, queen's fianchetto and Rad1. Archankelsk: 5...b5 (or 5...Bc5 6.c3 b5 7.Bb3) 6.Bb3 Bb7 Magem Badals-Llrente Zaro, Pamplona 2005, 12.a4 g6 13.f3 or 6...Bc5 7.c3 d6 8.a4 Stellwagen-Van de Poel, Vlissingen 2006, Naumann-Godena Szeged 2007, Sasikiran-Ponomariov, Zafra 2007, Timofeev-Halkias, Dresden 2007. Open Ruy Lopez: 9.Nbd2; ao Anand-Leko, Monaco 2005 and Svidler-Sokolov, Wijk aan Zee 2005. Marshall: 12.d4, 15.Re4 and the exchange sac g5 16.Qf3 Bf5 17.Bc2, see Milos-Egger, Sao Paulo 1993 (20...h6 is an improvement). His other option, the Anti-Marshall from Dominguez-Nielsen, Havana 2007, seems less attractive to me. Closed Ruy Lopez 9...Re8 10.d4 Bf8 11.Bg5. Smyslov Variation: 9...h6 10.d4 Re8 11.Nbd2 Deep Blue-Kasparov, New York 1997. Karpov Variation: 9...Nd7 10.d4 Svidler-Anand, Linares 1999 and Nijboer-Asis, Barbera del Valles 2007 (VD recommends 21.Qe2 and 22.Bd3). Breyer Variation: 9...Nb8 10.d4 Quezada-Blanco Santa Clara 2007, Zjigalko-Majorov Minsk 2007 and Nijboer-Butnorius Dresden 2007. Tsjigorin-Keres Variation: 9...Na5 10.Bc2 c5 11.d4 Nd7 12.Kh1 and 13.d5. Pure Tsjigorin: 11...Qc7 12.Nbd2 Van Delft-Timosjenko, Vienna 2003. White can improve with 25.Rxf6! Kxf6 26.a3!
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