Hyper LooperThree circles on one line, each allowing 180� turns with very deep intersections.
IzarFour intersecting circles in a jumbling puzzle. Two turns in five steps. Two in irrational angles.
Jumble CloudA 2D-jumbling puzzle to make many others obsolete.
Kaleidoscope-3Four circles of tiles with two centres and turns in 120°.
Kamennyi TsvetokSix intersecting circles (in steps of 120°) in a 2D-puzzle of soviet origin.
Keid 3Three circles turning in steps of 180° and one central circle to exchange pieces between them.
Keid 4Four circles turning in steps of 180° and one central circle to exchange pieces between them.
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