Home › Openings › Scandinavian Defense › Scandinavian Defense: Anderssen Counterattack Scandinavian Defense: Anderssen Counterattack, Collijn Variation ECO B01 · 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Bg4 Related variationsScandinavian Defense: Anderssen Counterattack, Goteborg SystemScandinavian Defense: Anderssen Counterattack, Orthodox Attack Practice this opening · Play against the computer