The Budapest Gambit (or Budapest Defense) begins with the moves: 1.d4 Nf6 2. C4 e5 The Budapest Gambit contains several specific strategic themes. In numerous variations the move c4–c5 allows White to gain space and to open prospects for his light-square bishop. For Black, the check Bf8–b4+ often allows rapid development. Once used by Vidmar to beat Rubinstein convincingly in just 24 moves.