Caissa Codex
D07

Queen's Gambit Declined: Chigorin Defense, Exchange Variation, Costa's Line 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 Queen's Gambit Declined: Chigorin Defense, Exchange Variation, Costa's Line

Play White's moves of the line from memory — 1. d4 d5 2. c4 Nc6 3. cxd5 Qxd5 4. e3 e5 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 exd4 8. Ne2 — 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 Queen's Gambit Declined: Chigorin Defense, Exchange Variation, Costa's Line page, or pick another opening in the opening trainer.

https://chesscodex.org/train/queens-gambit-declined-chigorin-defense-exchange-variation-costas-line