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kasparovfan ♡ 30 ( +1 | -1 )
What to do against 7. Bc4 in the Sicilian dragon? The standard move against 6. ... g6 in the Sicilian is 7. Be3, if I'm not mistaken, peemtively defending the knight on d4. But a lot of players play 7. Bc4 instead. Now, normally, when someone plays Bc4 early in the Sicilian, even after 1. e4 c5, I play 2. ... e6, blocking the diagonal of the bishop. But if I do that after having just played g6, I weaken f6. What to do?
chris21 ♡ 56 ( +1 | -1 )
The main idea of Be3 isn't to defend the Knight (as the queen is already doing this job) its that white's best response to the dragon is the yugoslav attack which involves queenside castling therefore white develops his queenside pieces as quickly as possible. If white plays Bc4 instead of the usual f3 black can attack the bishop on e3 with Ng4, threating to win the bishop pair. Bc4 is a normal move in the dragon anyway as it prevents black from playing Be6 (the best square for his bishop) but it's usually played around move 9.

Hope this helps some.
caldazar ♡ 125 ( +1 | -1 )
Well, let's see... 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 (I hope this makes sense; I think this is the standard move order but you may be using a different one if your numbering is different). 6... e6 is probably not so good; the dark-squared bishop would want to be on both e7 (to secure d6 and f6) and g7 (or else why else ...g6?). 6... Bg7 certaintly makes sense; you're likely going to have to play this anyway. White can then move back into the standard Yugoslav with 7. f3. Otherwise, White has to find a home for his dark-squared bishop. If he wants to play Be3, he'll have to play 7. h3 (assuming White doesn't choose 7.f3 to begin with) to keep the Black knight off of g4. If he chooses Bg5, then he can just develop quickly with 7. O-O and play Bg5 when appropriate. In any case, White and Black probably have their usual Sicilian-type plans; O-O with f4 for White and play in the center and on the kingside while is Black playing on the queenside with a6/b5/Bb7/Nbd7 or Nc6/Bd7/Rc8 and watching out for the chance to play a favorable ...d5.

Also, after 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. Be3, besides simply allowing a transposition back into the Yugoslav, Black has 7... Ng4 (now that White's light-squared bishop has wasted a move getting to c4) 8. Bb5+ Kf8 9. Bg5 (can't let the bishop get exchanged off for the knight) with a bit of a (playable) mess.