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Trapdoor 3
no Sound  -  Flip board
Broken canvas...
to move

Trapdoor (3)
Characteristic of this pattern is a white capture which opens the 'trap', a hole that black must immediately fill with a capture of his own.
Here on 1.c5b6 or 1.c5d6 black can promote with 1...h41 and after white's promotion he can capture to d6 or b6 respectively, coming out with a man more and two more threatening promotion.