Brechfenster
From Scholar Victoria
Break Window
Disambiguation; not to be confused with Sprechfenster though the two seem linguistically related (see the article on Sprechfenster).
16th Century
The break-window is described in Mair and Meyer as being a guard quite similar to Tag and used when "under" the sword of the opponent. From the depiction in Mair, we se that the guard protects above the head in a similar way to Kron
Meyer includes several techniques from Brechfenster, typically contending with attacks that befall us when we stand in this guard, including attacks to the hands/fingers, and to the exposed openings and arms.
The counter-techniques are typically based on use of the Zwerch from the guard as a kind of Absetzen movement.
The figure on the left below stands in Mair's "Break Window":
