Blackmar Diemer Gambit Accepted Teichmann Defense Clearance in Chess

In the Blackmar-Diemer Gambit Accepted: Teichmann Defense, “clearance” is the tactical idea of removing a piece from a critical square or line so another unit (often the queen or a bishop) can take over. A defining feature is that after the gambit is accepted, Black’s setup can leave a defender “in the way,” and White can clear that obstacle to win tempo or material. The motif often revolves around forcing moves that open lines for an attack while Black’s pieces are temporarily tied to defense.