Caissa Codex
C66

Ruy Lopez: Berlin Defense, Improved Steinitz Defense 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 Ruy Lopez: Berlin Defense, Improved Steinitz Defense

Play Black's moves of the line from memory — 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 — and the trainer plays White's replies; "Play the other side" turns it around.

"Drill all" adds the 5 named lines that continue it, such as Ruy Lopez: Berlin Defense, Closed Wolf Variation, Ruy Lopez: Berlin Defense, Hedgehog Variation, Ruy Lopez: Berlin Defense, Closed Bernstein Variation, Ruy Lopez: Berlin Defense, Closed Showalter Variation, Ruy Lopez: Closed Berlin Defense, Chigorin Variation.

Read about the line, its statistics on Lichess and Stockfish's evaluation on the Ruy Lopez: Berlin Defense, Improved Steinitz Defense page, or pick another opening in the opening trainer.

https://chesscodex.org/train/ruy-lopez-berlin-defense-improved-steinitz-defense