Caissa Codex
A39

English Opening: Symmetrical Variation, Mecking Variation 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: Symmetrical Variation, Mecking Variation

Play White's moves of the line from memory — 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4 — and the trainer plays Black'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 Variation, Mecking Variation page, or pick another opening in the opening trainer.

https://chesscodex.org/train/english-opening-symmetrical-variation-mecking-variation