Caissa Codex
D30

Queen's Gambit Declined trainer

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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 Queen's Gambit Declined

The Queen's Gambit Declined (1.d4 d5 2.c4 e6) is Black's classical, rock-solid answer to the Queen's Gambit. Play Black's moves of the line from memory — 1. d4 d5 2. c4 e6 — and the trainer plays White's replies; "Play the other side" turns it around.

"Drill all" adds the 97 named lines that continue it, such as Queen's Gambit Declined: Queen's Knight Variation, Queen's Gambit Declined: Normal Defense, Queen's Gambit Declined: Modern Variation, Semi-Slav Defense: Accelerated Move Order, Tarrasch Defense, Queen's Gambit Declined: Harrwitz Attack, Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch, Tarrasch Defense: Symmetrical Variation.

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

https://chesscodex.org/train/queens-gambit-declined