B01
Scandinavian Defense: Anderssen Counterattack, Collijn Variation
1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Bg4
The Scandinavian Defense: Anderssen Counterattack, Collijn Variation is a chess opening classified under ECO code B01. It is reached after the moves 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Bg4.
It belongs to the Scandinavian Defense family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.
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