Erik Demaine and Martin Demaine's Puzzles:

CSAIL Annual Meeting 2015 Puzzle

In what has become a regular event, Erik Demaine and Martin Demaine give out puzzles each year at our lab's Annual Meeting. Here is the 2015 edition.

This year, there are two separate sets of puzzles on two separate pages, with a common theme of cube folding:

Part 1
Part 2

[72dpi] [150dpi] [PDF] [72dpi] [150dpi] [PDF]


In Part 1, you are given three unfoldings (flat patterns) in the shapes of letters M, I, T, each of which folds into the 2 × 2 × 2 cube. Below, you are given three ways to cut up a 2 × 2 × 2 cube. Each of the unfoldings on top corresponds to exactly one of the cuttings on the bottom. Can you figure out which is which?

In Part 2, you are given two rectangular puzzles with slits or holes. In each case, your goal is to fold the puzzle only along the grid lines into a 1 × 1 × 1 cube. There are no constraints on whether the CSAIL logos should be showing. Can you solve both puzzles?

Printing Notes

The puzzles in Part 2 must be cut out, along the outer rectangle and along the indicated slit and holes.

The puzzle was designed for color printing, but it will work fine on a black-and-white printer.

The PDF files are the best combination of printing quality and small file size. You will need a suitable viewer. Alternatively, you can print one of the images. If you can print images scaled to fit, use 150dpi. Otherwise, use 72dpi.

Last updated June 13, 2015 by Erik Demaine.