Bishop's Opening: McDonnell Gambit

An entry in the Encyclopedia of Chess Openings (ECO C23), reached after 5 half-moves: 1. e4 e5 2. Bc4 Bc5 3. b4.

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3…Bxb4 2 lines
- C23 La Bourdonnais-Denker Gambit
- C23 McDonnell Double Gambit

About this opening

Bishop's Opening: McDonnell Gambit is an opening in the Encyclopedia of Chess Openings, classified under code C23. ECO group C (C00–C99) covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached after 5 half-moves from the starting position, with the move sequence 1. e4 e5 2. Bc4 Bc5 3. b4.

It belongs to the Bishop's Opening family. Within that family this is a sub-variation (the McDonnell Gambit line).

The opening sequence in prose form: 1.e4 e5, 2.Bc4 Bc5, 3.b4. From this position exactly one named continuation is recorded in the encyclopaedia.