Blackmar Diemer Gambit Teichmann Variation Discovered Attack in Chess

The blackmar diemer gambit teichmann variation discovered attack is a tactical motif where White sacrifices to open a line, then uses a piece move to “reveal” an attack on a more valuable target. In this theme, a defining feature is that the Teichmann setup creates a discovered line (often involving a bishop/rook behind a pawn or piece) so that after a specific move, the attack suddenly appears. The result is usually a tempo-gaining threat that can win material or force concessions.