CSAIL Annual Meeting 2004 Puzzle
In what has become a regular event, Erik Demaine and
Martin Demaine give out
each year at our lab's Annual Meeting in July. Here is the 2004 edition.
This puzzle is related to the
Origami Pattern series of puzzles by Serhiy Grabarchuk,
and studied further by Kozy Kitajima, Sasaki Setsuo, and Hiroshi Yamamoto,
which consider paper colored black on one side and white on the other
(so lack the orientation constraints) and restrict to simple folds.
See also a
Tom Hull and
Your goal is to fold the 5×5 puzzle into a
3×3 square so that just three CSAIL logos show.
The logos should all be on one side, lie along a diagonal,
and all be oriented the same way, aligned either horizontally or vertically.
(See images in lower-left corner.)
There are two puzzles: the vertical puzzle is harder.
You may fold anywhere, but you may not cut.
The puzzle was designed for color printing; it will work fine
on a black-and-white printer, but will be a bit more challenging.
The PDF file is the best combination of printing quality and small file size.
The PostScript file also has ideal printing quality, but the file is larger.
In either case, you need a suitable
Alternatively, you can print one of the images.
If you can print images scaled to fit, use 150dpi.
Otherwise, use 72dpi.