The Najdorf Variation, Opocensky Variation is a variation of the Sicilian Defense, catalogued as ECO B92. The line runs 1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. Be2 e5 7. Nb3 Be6 8. Be3, reaching the position shown below after 15 half-moves.
Both sides have pawns in the centre (White on e4, Black on e5). White is ahead in development, with four minor pieces out to Black's two. It is Black to move after eight moves.
On the Sicilian Defense generally: The most popular and aggressive response to 1.e4. Black fights for the center asymmetrically, leading to rich tactical play.
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The Najdorf Variation, Opocensky Variation goes 1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. Be2 e5 7. Nb3 Be6 8. Be3. It is a variation of the Sicilian Defense and is catalogued as ECO B92.
The Najdorf Variation, Opocensky Variation is ECO B92. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Sicilian Defense.
Stockfish evaluates the position after 1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. Be2 e5 7. Nb3 Be6 8. Be3 at +0.40 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.
Both sides have pawns in the centre (White on e4, Black on e5). White is ahead in development, with four minor pieces out to Black's two. It is Black to move.