This is a brand new puzzle that emerged from my experiments with creating interlocked tetrahedrons.
The two identical pieces are vaguely tetrahedral in shape and each piece has 180 degree rotational symmetry. The two pieces can be combined in a non-symmetrical fashion to fit inside a 7x7x7 cube outline.
"a wise man's tools are analogies and puzzles"
RÃ¶yksopp - Remind Me