The Yugoslav Attack, Topalov Variation is a variation of the Sicilian, Dragon Variation, catalogued as ECO B78. The line runs 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 Bd7 10. O-O-O Rc8 11. Bb3 Nxd4 12. Bxd4, reaching the position shown below after 23 half-moves.
White holds the centre with pawns on e4. Development is level at four minor pieces each. It is Black to move after 12 moves. The kings have gone to opposite wings (White queenside, Black kingside), which usually means both sides attack with pawns and the faster attack wins.
On the Sicilian, Dragon Variation generally: One of the sharpest openings in chess. Black fianchettoes the bishop to g7 creating a 'dragon' formation. The Yugoslav Attack leads to opposite-side castling and mutual attacks.
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The Yugoslav Attack, Topalov Variation goes 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 Bd7 10. O-O-O Rc8 11. Bb3 Nxd4 12. Bxd4. It is a variation of the Sicilian, Dragon Variation and is catalogued as ECO B78.
The Yugoslav Attack, Topalov Variation is ECO B78. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Sicilian, Dragon Variation.
Stockfish evaluates the position after 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 Bd7 10. O-O-O Rc8 11. Bb3 Nxd4 12. Bxd4 at +0.46 at depth 18, which is a slight pull for White, within normal opening margins. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
White holds the centre with pawns on e4. Development is level at four minor pieces each. It is Black to move. The kings have gone to opposite wings (White queenside, Black kingside), which usually means both sides attack with pawns and the faster attack wins.