The Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation is a variation of the Sicilian Defense, catalogued as ECO B31. The line runs 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4, reaching the position shown below after 11 half-moves.
Both sides have pawns in the centre (White on e4, Black on e5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is Black to move after six moves. White has castled while Black’s king is still uncommitted.
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 Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation goes 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4. It is a variation of the Sicilian Defense and is catalogued as ECO B31.
The Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation is ECO B31. 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 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4 at +0.20 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.
Both sides have pawns in the centre (White on e4, Black on e5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is Black to move. White has castled while Black’s king is still uncommitted.