Caissa Codex
A22

English Opening: King's English Variation, Adhiban Gambit trainer

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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 English Opening: King's English Variation, Adhiban Gambit

Play Black's moves of the line from memory — 1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 c6 — 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 English Opening: King's English Variation, Adhiban Gambit page, or pick another opening in the opening trainer.

https://chesscodex.org/train/english-opening-kings-english-variation-adhiban-gambit