A very difficult puzzle from Hanayama. The Key III has three keys you need to try and separate from the cage that holds them and then reassemble.
Cast Oskar, first released in 1987 and highly popular among puzzle collectors, has now been revived as “Cast Key III” with new gimmicks added. At first glance, it appears to be a flat puzzle where three keys are to be pulled out from the case… Designed by Oskar van Deventer from the Netherlands.
