Caissa Codex
A47

Marienbad System: Berg Variation 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 Marienbad System: Berg Variation

Play White's moves of the line from memory — 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. c4 cxd4 6. Qxd4 — 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 Marienbad System: Berg Variation page, or pick another opening in the opening trainer.

https://chesscodex.org/train/marienbad-system-berg-variation