Abstract: The present invention provides a cubic puzzle which is capable of changing its entire body into a cubic block shape ad has an improved entertainment property as a toy. A controller automatically changes a display pattern to a reference pattern by an actuator, making it a minimum condition that a current pattern being a display pattern at that point of time when identified by a pattern identifying means is different from a reference pattern being a predetermined reference display pattern, while a start state detecting means detects a predetermined start state.