Create a matching exercise with interlocking pieces

I've seen Storyline matching activities where two pieces snap together but can't seem to locate the examples or re-create from memory.  Can anyone point me in the right direction for this type of interaction?  It is similar to a jigsaw puzzle but is used for 1:1 matching exercises.  So, the user drags Piece A to Piece B and they snap to connect.  Similar to a standard drag and drop but a little different....

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