A cubic puzzle includes eight identical elementary pieces. Each elementary piece
is composed of eight identical blocks. 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, and a seventh block securely connected
to a side of an eighth block, wherein the seventh block is formed on top of the
fourth block. A position relationship between the sixth block and the fifth block
and the seventh block to the eighth block corresponds to a position relationship
between the fourth block and the third block.
