You have a square glass panel with 24 cm sides and a ring with 5 cm internal diameter.
Cut the glass in 4 identical pieces such that you can slide them through the ring.

Wow, nice solutions!

Assuming these spirals and horseshoes are all correct, I liked the S-bends solution posted by josh the best (http://perplexus.info/show.php?pid=3259&cid=24668).

Posted by Sam on 2005-07-08 10:53:13