Bishop's Opening: McDonnell Gambit, La Bourdonnais-Denker Gambit

1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.c3

ECO C23

The Bishop's Opening: McDonnell Gambit, La Bourdonnais-Denker Gambit is a chess opening line in the Bishop's Opening complex, reached after 1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.c3.

It is catalogued under code C23 in the Encyclopaedia of Chess Openings (ECO).

The defining move c3 is chosen by White on move 4.

Do you want to learn openings?

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• Catalan Opening
• King's Indian Defense with ...e5

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.