Jungle Bridge Puzzle

Hmmmm, not to sure if this just sounds to simple. Simply move the marble sized wooden balls around the wooden structured to a specific destination on the slim chain. Move the balls past seemingly impossible obstacles and through small holes. This is a great desk-top toy, however, we do not class this as a stress reliever, more a stress implicator but fun none the less. There are four different designs of this wood and metal puzzle to collect, each with a different aim and difficulty level. This annoying little puzzle is just 16cm's tall. Great for a mantlepiece nik-nak.