Bishop's Opening: McDonnell Gambit, McDonnell Double Gambit

This aggressive opening aims to quickly develop pieces and create attacking chances on the kingside.

The opening begins with a pawn push to e4, followed by a bishop development to c4. Black responds with a symmetrical bishop development to c5. White then plays b4, sacrificing a pawn to gain control of the center and open lines for the pieces. Black can accept the gambit with Bxb4 or decline it by retreating the bishop. If Black captures the pawn, White plays f4, further advancing the kingside pawns to create threats against the black king. This leads to an unbalanced position where White has active piece play and attacking chances, while Black has to defend carefully to avoid falling into tactical traps. The McDonnell Gambit is a sharp and dynamic opening that can catch unprepared opponents off guard and lead to exciting play for both sides.