Caissa Codex
B27

Modern Defense: Pterodactyl 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 Modern Defense: Pterodactyl Variation

Play Black's moves of the line from memory — 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 — and the trainer plays White's replies; "Play the other side" turns it around.

"Drill all" adds the 3 named lines that continue it, such as Pterodactyl Defense: Sicilian, Anhanguera, Pterodactyl Defense: Sicilian, Unpin, Pterodactyl Defense: Sicilian, Benoni Gambit.

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

https://chesscodex.org/train/modern-defense-pterodactyl-variation