HadarThree intersecting circles that return with steps of 2, 5 and 6 but still being doctrinaire.
Handy Mad TriadTwist the fingertips to rotate the four overlapping discs of wedges.
HarlequinThree differently sized intersecting plungers plus one rotating circle.
Hex ShaperThree intersecting circles which do NOT make up a planar surface.
Hex-Tri Slider (Version B)A sliding block puzzle with a mix of moveable hexagons and triangles. Compared with the first version the plungers have different offsets to each other.
HexicleA custom made variant of Kvadratura kruga with seven circles turned in steps of 60°.
HorVer-PuzzleFour pairwise intersecting plungers with sixteen pieces.
Hyper LooperThree circles on one line, each allowing 180° turns with very deep intersections.
IQ LollyA set of three puzzles differing only in size and the number of tiles.
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