Caissa Codex
B28

Sicilian Defense: O'Kelly Variation, Yerevan System 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 Sicilian Defense: O'Kelly Variation, Yerevan System

Play White's moves of the line from memory — 1. e4 c5 2. Nf3 a6 3. Nc3 — 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 Sicilian Defense: O'Kelly Variation, Yerevan System page, or pick another opening in the opening trainer.

https://chesscodex.org/train/sicilian-defense-okelly-variation-yerevan-system