Sandbox

### Sandbox

To combat the slipperiness special boxes for sand or salt are often placed along slippery slopes, such as bridges in winter. We used such a box for a new packing problem. The goal is to pack the four polycubes in the box and shut the lid. Only the ingenious puzzlers will succeed and the others end at the bottom of the slippery slope.

### Printing Instructions

Print one of each piece. After printing, slide the top lid into the box and you are all ready for puzzling.

### Difficulty

3 out of 5

### The Printable Puzzle Project

The [Printable Puzzle Project](https://www.puzzlehub.org/) aims to make available high-quality open-source models of many puzzle designs. All of our models are posted with the generous permission of their designers and are licensed for **non-commercial** use only. Anyone may print copies for their own personal use, but selling or otherwise monetizing them is not permitted, and puzzle designers retain all rights as copyright holders of their work.