Bad Egg by Alfons Eyckmans

 

I was surprised by this gem of a puzzle recently, as most know Alfons specializes in burr puzzles but this one is a box packing puzzle.

Obviously your goal is to pack all of the pieces into the box, there are four solutions.

Each piece is made by augmenting them with an extra unit attached in different ways.

As with any packing puzzle you’ll get most of the pieces packed in with one that just won’t fit..