The Anderssen Counterattack, Goteborg System is a variation of the Scandinavian Defense, catalogued as ECO B01. The line runs 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3, reaching the position shown below after 9 half-moves.
Both sides have pawns in the centre (White on d4, Black on e5), and one pawn capture is available, so the structure has not settled yet. White is ahead in development, with two minor pieces out to Black's zero. It is Black to move after five moves.
On the Scandinavian Defense generally: Black immediately challenges White's e4 pawn. Simple to learn but strategically deep.
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The Anderssen Counterattack, Goteborg System goes 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3. It is a variation of the Scandinavian Defense and is catalogued as ECO B01.
The Anderssen Counterattack, Goteborg System is ECO B01. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Scandinavian Defense.
Stockfish evaluates the position after 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 at +0.84 at depth 18, which is a small but real edge for White. 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 d4, Black on e5), and one pawn capture is available, so the structure has not settled yet. White is ahead in development, with two minor pieces out to Black's zero. It is Black to move.