Caissa Codex
A30

English Opening: Symmetrical, Hedgehog, Flexible Formation 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: Symmetrical, Hedgehog, Flexible Formation

Play Black's moves of the line from memory — 1. c4 e6 2. Nf3 c5 3. Nc3 Nf6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. d4 cxd4 8. Qxd4 d6 9. Rd1 a6 10. b3 Nbd7 — 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: Symmetrical, Hedgehog, Flexible Formation page, or pick another opening in the opening trainer.

https://chesscodex.org/train/english-opening-symmetrical-hedgehog-flexible-formation