A great packing and clever puzzle nicely made by Brian Menold (2015) !
It was an entry in the 2015 IPP Design Competition by Laszlo Molnar.
Six pieces of 2, 3, 4, 5, 6 and 7 cubes each, with each piece adding a cube to the previous shape, go into the box with restricted opening.
The puzzle is not as easy as it seems. The solving process involves a great Aha! moment...
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