AruslokyTwo rotating circles - very similar to the Cohan Circle puzzle.
Battle GearsA puzzle with intersecting circles and bandaged pieces. Produced in low quantity in seven different variants.
Cohan CircleTwo intersecting circles. There exists a newer relative named Arusloky.
Dancing GearsA puzzle with two intersecting circles. Produced in low quantity in four different variants.
Farmland GearA puzzle with intersecting circles. Compared with similar circles this puzzle has additional gears inside the big square-like pieces. Privately produced in small quantity in four variants.
GeraniumFive intersecting circles cut with fivefold symmetry imposing unprecedented theoretical challenges.
Gizmo GearsA puzzle with two intersecting circles and bandaged pieces. Produced in low quantity in four different variants.
Handy Mad TriadTwist the fingertips to rotate the four overlapping discs of wedges.
Hungarian Rings QuadA generalized version of the Hungarian Rings created customly by the original inventor.
Kvadratura KrugaA puzzle from the soviet era. Its title means "Squaring the circle"