French Defense Diemer Duhm Gambit Accepted Discovered Attack in Chess

In the French Defense Diemer–Duhm Gambit Accepted, Black sacrifices a pawn and then looks to activate pieces quickly. The “discovered attack” motif arises when a piece (often a bishop or queen line) moves or is unblocked so that another piece suddenly attacks a target behind it. A defining feature is that the gambit’s accepted structure creates open lines and tactical angles for these sudden, tempo-gaining attacks.