Blackmar-Diemer Gambit: Reversed Albin Countergambit trainer
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Practise the Blackmar-Diemer Gambit: Reversed Albin Countergambit
Play Black's moves of the line from memory —
1. d4 d5 2. e4 dxe4 3. Nc3 c5 — and the trainer plays
White's replies; "Play the other side" turns it around.
Read about the line, its statistics on Lichess and Stockfish's evaluation on the Blackmar-Diemer Gambit: Reversed Albin Countergambit page, or pick another opening in the opening trainer.