[quote author=Michael Ayton link=1138105012/15#20 date=1140449827]As has been mentioned in another thread, Mamedyarov’s adoption of the Modern Steinitz at Corus has highlighted some interesting new ideas, and there’s a very interesting summing-up of these in Olivier’s latest update. My first conclusion from this is that the Modern Fianchetto Variation (5 0-0 Bd7 6 c3 Nf6 7 d4 g6 8 Re1 b5 9 Bb3 Bg7) is under something of a cloud because of Kuzmin’s 10 Bg5! h6 11 Bh4 0-0 12 a4!. (Might 12 …Qe7 be an idea here, I wonder?)
The ‘compensation’ is that Olivier’s notes imply the Bronstein Variation (5 c3 Bd7 6 d4 g6 7 0-0 Bg7) is an interesting fighting choice, since after 8 Re1, 8 …Nge7!? is in business: 9 d5 Nb8 10 Bd7 Nd7 11 Be3 0-0 12 c4 h6 13 Nfd2 f5 14 f3, and now, rather than 14 …c5?! as in Polgar--Spassky, 14 …f4 15 Bf2 g5, as in Trujillo Delgado--Semenova, is obviously thematic and looks OK. I was pleased that I’d reached this conclusion independently, but Spassky’s play in that game did look a bit weird!
One question that might arise out of this is whether, in the Rubinstein Variation after 5 c3 Bd7 6 d4 Nge7, Black can usefully, after either 7 Be3 or 7 0-0, play 7 …g6 rather than 7 …Ng6. After 8 d5 can he launch the same attack just as effectively, or can White by avoiding Rf1--e1 save a useful tempo? (A further sophistication might be 7 …h6 intending 8 …g6, as tried in Anand--Yusupov after 7 Be3.) The question is far from academic, since should these lines be OK for Black, he could reach a Bronstein-Steinitz via a Cozio move order! Does Karolyi say anything about 7 …g6 or 7 …h6, kylemeister?
White’s other main try for advantage is 8 Be3!?. Here NCO gives Topalov--Azmaiparashvili which went: 8 …Nf6 9 Nbd2 0-0 10 de Ne5 11 Ne5 de 12 f3 Ba4 13 Qa4 Qd3 14 Rfe1 with a small edge, but Azmai seemed to draw easily enough after 14 …Rfd8. Pete Tamburro suggests something a lot more exciting: 9 …Ng4!? 10 Bg5 f6 11 Bh4 Qe7!?; he continues with (the never-played?) 12 d5 and claims dynamic equality after 12 …Nb8 13 Bd7 Nd7 14 c4 h5 15 Bg3 0-0-0 16 b4 g5 17 h4 Bh6 18 Nb3 Rhg8. Anyone got any thoughts on this? (11 …g5!?, 11 …h5!? and 11 …Ne7!? have all also been played here -- the latter by Smyslov, though he lost!) [/quote]
Nah, Karolyi just talks about ...Nge7 followed by ...Ng6 (and White then playing d5).
I would think that missing out Re1 would be of benefit to White in the King's Indian-ish case. It's an interesting issue, how these positions compare to the actual King's Indian. One might think that the Neo-Steinitz versions are just worse for Black, because the light-squared bishops are exchanged (generally unfavourable for Black in such a structure). But comparing the tempi it seems that Black generally comes off better in the Neo-Steinitz case. E.g., in the case of ...Nge7, ...Nb8 and ...Nxd7 Black has taken the same number of knight moves to get them to e7 and d7 as in the Classical KID; White took two moves to get his pawn to c4; perhaps Black got in ...a6 "for free," though it apparently has both good (preventing Nb5) and bad (weakening b6) sides. Then again, it seems that White can generally get in Be3 and Nf3-d2 in the Neo-Steinitz case, which looks like an optimal deployment of those two pieces (and something White generally can't achieve in the KID). Ah, and I suppose Black often has to use a tempo on ...h6 in the Neo-Steinitz. So maybe the tempo situation is "a wash," unless White has played Re1, when Black has an extra tempo as "compensation" for the unfavourable bishop exchange? Preliminary thoughts anyway.
Incidentally, I noticed that Mamedyarov continued to play the N-S at the Aeroflot tournament. He had at least two games with it there. One of them involved the same line (basically quick d4 without c3) in which Mamed lost to Leko at Corus (the Aeroflot game was about a 20-move draw, against a strong GM). Another one followed the line you give as putting the Modern Fianchetto under a cloud, but Mamed's opponent (another 2600+ guy) didn't play 12. a4.
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