About this opening
Scandinavian Defense: Anderssen Counterattack is an opening in the Encyclopedia of Chess Openings,
classified under code B01. ECO group B (B00–B99)
covers semi-open games (1.e4 with Black playing anything other than 1…e5), with the Sicilian, French, Caro-Kann and Pirc/Modern at its heart. This particular variation is reached
after 8 half-moves from the
starting position, with the move sequence 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5.
It belongs to the Scandinavian Defense family. Within that family this is a sub-variation (the Anderssen Counterattack line).
The opening sequence in prose form: 1.e4 d5, 2.exd5 Qxd5, 3.Nc3 Qa5, 4.d4 e5. From this position 2 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.
Use the interactive board above to walk through the moves position-by-position. Click any move in the navigation to step backwards, or use the keyboard arrow keys. The list of recorded continuations sits directly below the board. For statistical data — how often master-level players have reached this position, White's win-rate, draw frequency, Black's score — see the panel in the right column.
Caissly's coverage of B01 extends through every named sub-variation in this line and across all four locales (English, Spanish, Portuguese, Russian). Where editorial commentary exists for a specific variation it appears as the page body; otherwise the page presents the structural data, board, and statistics as shown here.