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

Dmitry Andreev
Duplex 2Two intersecting circles of which one can be twisted.
Duplex 3Two circles of marbles that would not intersect if it weren't for the twist of the Duplex puzzles.
Eight PlusThree intersecting circles turning in steps of four, two and eight.

Fifteen in circlesThree intersecting circles with fifteen pieces and one hole.
FomalhautTwo circles with different degree of rotation in a puzzle that is still doctrinaire.
ForamenCombines two intersecting circles with one plunger.

GacruxTwo intersecting circles with eightfold turns but not in steps of 45�. A jumbling-only puzzle.
GienahRashkey 3 (and 2!) in a puzzle with 120° turns.
Gienah 2The Gineah with different cutting depths.

Gienah olympicGienah extended to five circles.
Gienah2 tripleGienah2 extended with an additional third circle.
Gienah2 triple unbandagedGienah2 triple with some additional cuts.

HadarThree intersecting circles that return with steps of 2, 5 and 6 but still being doctrinaire.
Irregular Puzzler 1.0Two intersecting circles with irregular angles between steps.
Irregular Puzzler 2.0Two intersecting circles with irregular angles between steps.


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