The Classical Variation is a variation of the Sicilian, Dragon Variation, catalogued as ECO B70. The line runs 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3, reaching the position shown below after 15 half-moves.
White holds the centre with pawns on e4. White is ahead in development, with four minor pieces out to Black's two. It is Black to move after eight moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.
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 Classical Variation goes 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3. It is a variation of the Sicilian, Dragon Variation and is catalogued as ECO B70.
The Classical Variation is ECO B70. 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. Be2 Bg7 7. O-O O-O 8. Be3 at +0.22 at depth 18, which is balanced. 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. White is ahead in development, with four minor pieces out to Black's two. It is Black to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.