This is a really attractive puzzle. Comes with an all hardwood box with sliding lid. Embedded into a hold area on the lid is a red block, the "Redstone". If you remove the lid you will see that the box appears to be full to the top with 9 pieces. You goal is to take the Redstone and insert it in the box such that you can close the lid! Seems impossible... but of course it can be done! Comes with clear instructions. This puzzle was designed by Bernhard Schweitzer, Germany.

Dimensions: 4 1/2" x 3" x 2 3/4"
Difficulty level: 4 (out of 6)
Suggested age: 15+