The Rattle - Stewart Coffin Design #237 by Henry Strout

This is another cool packing design by Stewart but this one has a lone piece that remains trapped inside while all the remaining pieces are to be packed in.  It’s a very difficult puzzle as the ‘rattle’ piece tends to slide around messing around with the assembly!

Henry crafted this puzzle for IPP 29 Exchange in San Francisco, California.

Here’s Stewart’s description:

“Seven solid polyominoes get stuffed into a 4x4x2 box with acrylic cover through 

a 1x2 slot on one side. Not quite your usual packing problem because an eighth piece remains forever loose inside, hence the name.”