Yugoslav Attack
Sicilian Defense
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4
White aims for a direct attack on the Black king by advancing pawns on the kingside.
Fun fact: Bobby Fischer wrote of the Yugoslav Attack that "White's attack almost plays itself", and that weak players even beat grandmasters with it. Source
Practice this lineThe idea
This is the main test of the Dragon: 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4. White prepares long castling, and the bishop on c4 stops Black's freeing ...d5.
Both sides attack the opposite king: White on the h-file, Black on the c-file and the long diagonal. The game is often decided by whose attack arrives first.
Plans for White
Castle queenside, then play Bh6 to trade Black's dark-squared bishop and h4-h5 to open the h-file. Sacrifices to open the h-file are common, and the attack often ends in mate there.
Against ...Rc8, the bishop is usually moved to b3 so it isn't hit by a discovered attack on the c-file.
Plans for Black
Play ...Bd7, ...Rc8 and ...Ne5, then ...Nc4 to exchange White's bishop. The exchange sacrifice ...Rxc3, breaking up White's queenside pawns, is a standard idea, and the bishop on g7 then becomes very strong.
Push the b-pawn to open more lines against White's king. Speed is everything.
Watch out for
For Black, keeping the bishop on g7. If White trades it off with Bh6 and Black has no counterplay, the h-file opens against a bare king.
For White, the bishop on c4. With Black's rook on c8, a knight move from the c-file can uncover an attack on it. That is why White usually puts it on b3 in advance.