Caissa Codex
A11

Réti Opening: Anglo-Slav Variation, with g3 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 Réti Opening: Anglo-Slav Variation, with g3

Play Black's moves of the line from memory — 1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 — 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, with g3 page, or pick another opening in the opening trainer.

https://chesscodex.org/train/reti-opening-anglo-slav-variation-with-g3-3