Caissa Codex
A14

English Opening: Agincourt Defense, Neo-Catalan Declined 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: Agincourt Defense, Neo-Catalan Declined

Play Black's moves of the line from memory — 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. e3 d4 — 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: Agincourt Defense, Neo-Catalan Declined page, or pick another opening in the opening trainer.

https://chesscodex.org/train/english-opening-agincourt-defense-neo-catalan-declined-6