Caissa Codex
C42

Petrov's 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 Petrov's Defense

Play White's moves of the line from memory — 1. e4 e5 2. Nf3 Nf6 3. Nxe5 — and the trainer plays Black's replies; "Play the other side" turns it around.

"Drill all" adds the 33 named lines that continue it, such as Petrov's Defense: Stafford Gambit, Petrov's Defense: Classical Attack, Petrov's Defense: Damiano Variation, Petrov's Defense: Nimzowitsch Attack, Petrov's Defense: Cozio Attack, Petrov's Defense: French Attack, Petrov's Defense: Damiano Variation, Kholmov Gambit, Petrov's Defense: Cochrane Gambit.

Read about the line, its statistics on Lichess and Stockfish's evaluation on the Petrov's Defense page, or pick another opening in the opening trainer.

https://chesscodex.org/train/petrovs-defense-2