blueguitar322 wrote on 06/19/07 at 20:44:48:

There's also 6.f3 Nxd4 7.Qxd4 g6 with some sort of dragon, which isnt too sharp. Basically you wont get bothered with a yugoslav attack (a sort of English attack as well). I have played this a few time in rapid and blitz and it gives black decent play. This Nxd4 followed by g6 is also possible against Be2 btw.

It seems like most of the big boys have stayed away from these lines except via transposition in one Ivanchuk game (vs. Kozul, Euro Team Ch 2005)

Some of the main lines seem to be:
6 Be3 e6 is a Scheveningen where Black's knight is on c6, and d7 might be preferred
6 Be3 a6 is a Najdorf where the same comment applies
6 Be3 e5 7 Ndb5 is a Sveshnikov where White has placed his dark-squared bishop poorly (belongs on g5) but 7 Nf3 and 7 Nb3 are also options. Of course, 7 Nb3 is the most thematic English Attack placement (though this knight is probably White's poorest performing piece in the English Attack)
6 Be3 Ng4 7 Bg5 h6 8 Bh4 g5 9 Bg3 Bg7 is similar to the Najdorf but again a knight on c6 and b5 isn't controlled...not sure who this helps (guess is Black, since activity is so important to his strategy and the knight often ends up on c6 anyways)
6 Be3 Ng4 7 Bb5 seeks to exploit the b5 square at the cost of the dark-squared bishop, but Black seems to score pretty well (59% according to ChessGames.com database)

Of course there's always the 6 f3 move order as well...
6 f3 Qb6 is a typical idea to prevent Be3 and pull the d4-knight out of the center with 7 Nb3, but Ivanchuk played 7 Be3!? anyways
6 f3 e5/e6/a6 7 Be3 are again Najdorf/Scheveningen systems where I'm not sure who the Nc6 - a6/e6 tradeoff helps more...

Anyone studied these lines or have practical experience with them? I'm wondering just how many Sicilian setups White can employ the English Attack against...