Caissa Codex
B01

Scandinavian Defense: Anderssen Counterattack, Collijn Variation trainer

Back to the opening, all openings to practise or my repertoire

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

Practise the Scandinavian Defense: Anderssen Counterattack, Collijn Variation

Play Black's moves of the line from memory — 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Bg4 — and the trainer plays White's replies; "Play the other side" turns it around.

Read about the line, its statistics on Lichess and Stockfish's evaluation on the Scandinavian Defense: Anderssen Counterattack, Collijn Variation page, or pick another opening in the opening trainer.

https://chesscodex.org/train/scandinavian-defense-anderssen-counterattack-collijn-variation