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A block set including a first block having a first and second cubic recess, the first and second cubic recess being diagonally opposed and the convergence points of the first and second cubic recesses being located along a common axis which is arranged a 45.degree. angle relative to each of three or

A block set including a first block having a first and second cubic recess, the first and second cubic recess being diagonally opposed and the convergence points of the first and second cubic recesses being located along a common axis which is arranged a 45.degree. angle relative to each of three orthogonal surfaces that define the first cubic recess and each of three orthogonal surfaces that define the second cubic recess. The block set also including a second cubic block adapted to be at least partially receivable within the first and second recesses of the first block.

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1. A block set comprising:a first block having a body including a first three sided cubic recess defined by a first set of three orthogonally arranged surfaces of said body and a second three sided cubic recess defined by a second set of three surfaces of said body, said first three sided cubic rece

1. A block set comprising:a first block having a body including a first three sided cubic recess defined by a first set of three orthogonally arranged surfaces of said body and a second three sided cubic recess defined by a second set of three surfaces of said body, said first three sided cubic recess having a first convergence point at the intersection of said first set of three orthogonally arranged surfaces and said second cubic recess having a second convergence point at the intersection of said second set of three orthogonally arranged surfaces, each of said first and second convergence points being aligned along a common axis that is arranged at a 45.degree. angle relative to said first set of three orthogonally arranged surfaces and said second set of three orthogonally arranged surfaces; a second block having a rectilinear body structured and arranged to be at least partially receivable within said first and second cubic recesses; and wherein said second three sided cubic recess is substantially smaller relative to said first three sided cubic recess and is structured and arranged to receive a corner portion of said second block element.