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Thanks for this, linksspringer. I really must buy that book! ... This topic relates to (really, equates with) the subject of another recent post of mine, in the KID section, which so far hasn’t generated any responses: [url]http://www.chesspub.com/cgi-bin/yabb2/YaBB.pl?num=1208820581[/url] Perhaps we should treat these [i]Nimzo-[/i]derived positions according to the move order 5 Bd3 g6 6 c4 Bg7 (unless there’s a problem with this), because then, after 7 Nc3 0-0 (7 …Nbd7!? is possible) 8 h3 (the most common?), we can consider a number of options for Black: 8 …c6 (the main line?), 8 …Na6, 8 …e6, 8 …c5, 8 ...a5. The sequence given by K&S then transposes, via 8 Nc3 0-0 9 h3, to the 8 h3 c6 line (with 9 0-0). My question here is, how should Black play this position? Berdichevsky (p. 164) cites the game Wirthensohn--Herzog, which continued 9 …a6 10 Re1 b5 (‘!’, Berdichevsky) 11 cb ab 12 dc b4!, and 0--1, 44. But what if white plays 11 Bf4? I’m worried that Black may be significantly worse after 11 …b4 12 Na4, or 11 ...Nh5 12 Bg5/Be3, or 11 …e5 12 de. My Rybka sacs a pawn with the curious 11…Bb7 12 dc Nc6 13 cb ab 14 Bb5, but is this really enough after say 14 ...Qb6 15 Be3 Qa5 16 Qd3? Of course, Black has other ninth-move options, but some of them (e.g. 9 …a5) run the risk of leaving him a tempo down on E91 lines. One game, which I haven’t looked at yet, went 9 …Nbd7 10 Be3 c5. In short, Black seems to have quite a few choices on move 8 and move 9, and I’d really welcome thoughts on which of them might be promising and which not! There’s also the broader question of whether we can suggest any guidelines for when Black should/might alter the strategic lines of the position with moves like e7--e5, c6--c5 or cxd5. I admit to being a bit hazy here, possibly because I haven’t played the KID for twenty years! For us devoted students of …Nc6 systems these positions are important, since although they’re not too common they can arise, I believe, from no fewer than six different openings! – Nimzowitsch Defence, Mestrovic Defence, KID, Old Indian (Panther), Bogolyubov Defence, Tango. (There may be more!)
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