Sicilian, Dragon, Yugoslav attack, 7...O-O

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In chess, B76 is the ECO code for the Sicilian Dragon, Yugoslav Attack, 7...O-O chess opening. The game begins 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O. While B77-B79 cover the continuation 8.Qd2 Nc6 9.Bc4, B76's main focus is on 8.Qd2 Nc6 9.0-0-0. White's most common ninth move is 9.Bc4, preventing 9...d5, but this loses time to Black's typical development scheme of ...Bd7, ...Rc8 and ...Ne5-c4 when White's bishop must retreat to b3 at some point. With 9.0-0-0, White does not waste time moving the bishop and argues that it is not necessary to defend against Black's ...d6-d5 pawn break. White may also opt for 9.g4 to hasten a kingside attack and prevent the equalizing 9...d5. ECO briefly mentions 8.Bc4 with 9.Qe2 and eventually 0-0 & Rfd1, creating a central attack theme and removing White's King from the queenside. 9.0-0-0 has regained some popularity in recent years at the expense of 9.Bc4.