Caissa Codex
C30

King's Gambit Declined: Classical 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 King's Gambit Declined: Classical Variation

Play White's moves of the line from memory — 1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 — and the trainer plays Black's replies; "Play the other side" turns it around.

"Drill all" adds the 3 named lines that continue it, such as King's Gambit Declined: Classical Variation, Rubinstein Countergambit, King's Gambit Declined: Classical Variation, Euwe Attack, King's Gambit Declined: Classical, Réti Variation.

Read about the line, its statistics on Lichess and Stockfish's evaluation on the King's Gambit Declined: Classical Variation page, or pick another opening in the opening trainer.

https://chesscodex.org/train/kings-gambit-declined-classical-variation-2