Go RoundTen pieces on two parallel plungers plus one big circle.
GretaVexA sticker variant of the Gripple. Made to make the puzzle more difficult.
Grid Slider 5A sliding block puzzle of five tiles retained within a cross track and a square ring.
GriddleA sticker variant of the Gripple. Made to make the puzzle more difficult.
GrippleAn uncommon puzzle produced in Hong Kong.
GrizziA sticker variant of the Gripple. Made to make the puzzle more difficult.
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.