Caissa Codex
B00

Nimzowitsch Defense: Colorado Countergambit Accepted 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 Nimzowitsch Defense: Colorado Countergambit Accepted

Play White's moves of the line from memory — 1. e4 Nc6 2. Nf3 f5 3. exf5 — and the trainer plays Black's replies; "Play the other side" turns it around.

Read about the line, its statistics on Lichess and Stockfish's evaluation on the Nimzowitsch Defense: Colorado Countergambit Accepted page, or pick another opening in the opening trainer.

https://chesscodex.org/train/nimzowitsch-defense-colorado-countergambit-accepted