Description
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…but there's much more to it than that! Designed by Oskar van Deventer from the Netherlands.
difficulty level: 6/6
Chinese
Japanese
Korean
