Caissa Codex
C48

Four Knights Game: Spanish Variation, Rubinstein Variation, Marshall Gambit 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 Four Knights Game: Spanish Variation, Rubinstein Variation, Marshall Gambit

Play Black's moves of the line from memory — 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Ba4 Bc5 6. Nxe5 O-O — 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 Four Knights Game: Spanish Variation, Rubinstein Variation, Marshall Gambit page, or pick another opening in the opening trainer.

https://chesscodex.org/train/four-knights-game-spanish-variation-rubinstein-variation-marshall-gambit