Caissa Codex
A14

English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 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 English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3

Play White's moves of the line from memory — 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 — and the trainer plays Black's replies; "Play the other side" turns it around.

"Drill all" adds the 2 named lines that continue it.

Read about the line, its statistics on Lichess and Stockfish's evaluation on the English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 page, or pick another opening in the opening trainer.

https://chesscodex.org/train/english-opening-agincourt-defense-neo-catalan-declined-early-b3