@Chess_Addicts: no,no...you are right "Steinitz" is a good name
Vitiugov put aside one main line with 7...Be7 giving only recent Carlsen game vs Karjakin without even mentionning what has been said in chesspub forum or chessbase website and others...mainly, Carlsen has chosen this line because Karjakin was expert in French.
Comparing to McDonald's book (I am happy to have bought his book same time as Vitiugov'sone): Mc Donald gives "Black's brilliant 7...Be7 move" .... It's another anectode which confirms my previous post: where authors devoted a real in depth work for variation, Vitiugov annotates "lighty" (Be7 "a seemingly harmless move" - Vitiugov).
Vitiugov gives 7...Qb6 and 7..a6 as main moves
For 7.Qb6 referenced games are:
- Nunn-Ehlvest,Reykjavik 1988 (I have recorded it from Tiemann(s book)
- Kamsky - So, Khantisiysk 2009 ( deviating at move 18: 18..f6! was given in game .Gueroff-Jackelen,1988 Europe Echecs 1997)
- Bologan-Volkov,Sochi 2006 (deviating at move 12: 12...b5?! was in game Svidler-Bareev,2006 or 12...oo Eyo-Cardona,Formigal 2002 (Khalifman) )
- Salem-Volkov,Dubai 2002 and Shomoev-Volkov,Tomsk 2006 (new games for my data)
- Nyback-Volkov,Plovdiv 2008 (as given by chesspublishing update mai 2008)
- Short-Timman,Amsterdam 1994 with Ivanchuk's move 13...g5 and only analysis of the novelty of this game with 15...Rb8?!
- Quezada Perez-Cordova,La Havanne 2009 (not mentionning the interesting 19...f6 and quoting the line as "cannot be recommended to Black" some moves fter 19..g6 )
- Chandler-Gurevich,Leningrad 1987 (forgetting the 15...Bxd3 analysis or 21.Nf1!? Nunn-Zysk,Allemagne 1987 (Short) )
and main analysis is about the Boleslavsky plan 7..Qb6 8.Na4 and the usual sacrifice in this line Nxb4
For 7...a6 referenced games are:
- Topalov-Morozevich,Linares Morellia 2007 with 10.Ne2
- Richards-Kiriakov,2005 (new analysis from Vitiugov with 10..g6)
- Safarli-Lintcheski,Kirirshi 2006 (missing the 12...Nbd3+ or 11...Nd7 analysis)
- Dominguez Peres-Nogueiras Merida 2002 (see NIC #42 with Glek analysis about 12.Bd3)
- Riazantsev-Michna,Hamburg 2005 (missing the 10.Nd1!? b4 11.oo cxd4 line DeFirmian,Dreev,Manille 1990 (Tiemann) )
- Anand-Morozevich,MonteCarlo 2004 (missing the 10..Qb6 alternative Blatny-Andersson,Prague 1996 (Inf 67 and Tiemann))
-Karjakin-Viiugov,Khanti Manski 2009 (new move 10...b4!? )
- the "beauty prize game" -sic - Kasparov-Radjabov,2003 with 10...c4 Europe Echecs juin 2003
- not mentionned is the quick 9.f5 Vescovi-Pelikian,Guarulhos 2006 (chesspublishing update 2006)
7...a6 system is covered mainly by Vitiugov with the "fashion" move 8.Qd2 b5 9.a3!? followed with Qb6 which follows the classical battle about the control of dark square diagonal a7-g1 and the blockade square d4.
For White it will be a good idea to stick to Kasparov analysis after 11.g4 or SHipov analysis after 11.f5. I have referenced this game too: Hungaski-Cordova,Moscou 2006. I like too the 9.h4 strategy: Wohl-Happel,Naujac 2004 (not playinf an early a3)