A little curiosity transforms this simple wooden puzzle into a geometric ballet in flat land. Pentangular Jam is approachable enough for a child but challenging enough for an industrial engineer. Like it's cousin, Rectangular Jam, the goal is to remove the odd-colored piece while keeping everything flat in the tray. The five-sided shapes make sliding and spinning a complicated proposition but once you discover the secret move that unlocks the jam, you'll have to stop and smile.
Designed by award-winning puzzle creator Iwahiro, a Japanese mathematician and writer and one of our favorite living puzzle inventors.
Measures approximately 5 x 5 inches. Made in Thailand.