Shadow TetrahedronA face turning triangular dipyramid in shape of a tetrahedron with randomly shaped splines instead of straight cuts.
ShatkonaTwo circles turning in steps of 60° with one plunger for intersecting pieces.
SheliakThree intersecting circles and one plunger moving half of the puzzle in steps of one and two.
Sheliak÷3Three intersecting circles split horizontally by three plungers.
SheratanTwo intersecting circles. The smaller one turning in steps of 180°, the larger turning in steps of 120°. The circles intersect extremely deeply.
Side ViewMechanically this is a simple puzzle with four intersecting circles. Innovative is the fact that one can only see the side of the pieces which is still enough to solve it.
Sirius 3The Sirius implemented anew with a third circle.
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