Online since 2002. The most comprehensive site for all around twisty puzzles.

Phantom Mirror blockThe concept of the Mirror Blocks applied to a 3x3x4.
Tanners DominoAt first it looks like a pillowed 2x3x3 (aka Domino) but it is a 3x3x4 shaved down to the size of a 3x3x3.
TerakingThe 3x3x4 transformed into a tetrahedron with two layers fishered.

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