C21 Open games

Danish Gambit Accepted: Copenhagen Defense

Danish Gambit Accepted: Copenhagen Defense is an ECO C21 opening in the open games family. Study the line, review related variations, and practice the move order.

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Learn this opening

C21 study line

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Step through the line, then test it from memory.

The Danish Gambit Accepted: Copenhagen Defense reaches a named position after 5 moves: 1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 Bb4+

In practical games, this line matters because the early pawn and piece choices decide which middlegame plans are natural. Use the board above to learn the move order, then run the drill without hints before adding the opening to your regular queue.

If this exact branch does not appear in your games, study the related variations below. Openings often transpose, and recognizing the family pattern is more useful than memorizing one narrow sequence.