Caissa Codex
C67

Ruy Lopez: Berlin Defense, Rio de Janeiro 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 Ruy Lopez: Berlin Defense, Rio de Janeiro Variation

Play Black's moves of the line from memory — 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Be7 — and the trainer plays White's replies; "Play the other side" turns it around.

"Drill all" adds the 7 named lines that continue it, such as Ruy Lopez: Berlin Defense, Minckwitz Variation, Ruy Lopez: Berlin Defense, Cordel Variation, Ruy Lopez: Berlin Defense, Trifunovic Variation, Ruy Lopez: Berlin Defense, Zukertort Variation, Ruy Lopez: Berlin Defense, Winawer Attack, Ruy Lopez: Berlin Defense, Pillsbury Variation.

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

https://chesscodex.org/train/ruy-lopez-berlin-defense-rio-de-janeiro-variation