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

Dmitry Andreev
SheratanTwo intersecting circles. The smaller one turning in steps of 180°, the larger turning in steps of 120°. The circles intersect extremely deeply.
SiriusTwo intersecting circles with 147 pieces, named after the brightest binary star system on the sky.
Sirius2Sirius with one piece type less than the first version.

SpicaTwo intersecting circle turning by 45°, without jumbling.
SualocinTwo intersecting circles turning in steps of 120° and 180°.
Suhail 5Two intersecting circles with steps of 72� and 60� and different radiuses.

Suhail 6Two intersecting circles with steps of 60� each but with different radiuses.
Takenoscope 23A Rotascope implemented completely different.
TarazedTwo intersecting circles turning in steps of 90°. With 119 pieces.

TaygetaThree intersecting circles with one 8-fold rotation and two non-infinite fivefold rotation.
TolimanThree intersecting circles that are differently sized and allow different rotations.
Toliman 2Three intersecting circles with different sizes and different rotations.

TranspaThree layers of transparent pieces that can be pushed on top or below each other. The goal is to create a specific pattern.
Trio 2An improvemente of the original Trio by clevertoys.
VindemiatrixFour circles that allow turns of 45° but not every turn is available all the times.


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