Patent ID: 6910691

Claim:
A cubic puzzle comprising: eight identical elementary pieces, wherein each elementary piece is composed of eight identical blocks, the eight blocks are distributed in an upper layer and a lower layer, wherein the lower layer has a first, a second, and a third block linearly connected to a side face of each other and a fourth block transversely and securely connected to a side of the third block, the upper layer has a fifth block securely connected to a side of a sixth block, wherein the fifth block is formed on top of the first block, a seventh block securely connected to a side of an eighth block, wherein the seventh block is formed on top of the fourth block, wherein a position relationship between the sixth block and the fifth block and the seventh block to the eighth block correspond to a position relationship between the fourth block and the third block, whereby rearrangement of the eight elementary pieces each with a unique orientation different from the others is able to form a cube.