What do you call this kind of move?

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tigerprowl9

There are forks, pins, skewers, but what do you call this?  The knight is pinned.  However, when the bishop goes to d7, the knight now is not pinned and is attacking the queen.

 

This kind of move should be looked into if there isn't a name yet.

 



Awake77

unpinning?

Frittles

Breaking the pin, or unpinning.