Caissa Codex
A12

Réti Opening: Anglo-Slav Variation, London Defensive System 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 Réti Opening: Anglo-Slav Variation, London Defensive System

Play Black's moves of the line from memory — 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5 — 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 Réti Opening: Anglo-Slav Variation, London Defensive System page, or pick another opening in the opening trainer.

https://chesscodex.org/train/reti-opening-anglo-slav-variation-london-defensive-system