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

Douglas A. Engel
Barrel Shuttle 11A puzzle which looks like the wellknown moving-hole-puzzle-with-cylindrical-surface but has a mechanism which goes beyond that.
Barrel Slide 121A puzzle which looks like the wellknown moving-hole-puzzle-with-cylindrical-surface but has a mechanism which goes beyond that.
Battle GearsA puzzle with intersecting circles and bandaged pieces. Produced in low quantity in seven different variants.

Blocked Barrel 15A puzzle which looks like the wellknown moving-hole-puzzle-with-cylindrical-surface but has a mechanism which goes beyond that.
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.

Gizmo GearsA puzzle with two intersecting circles and bandaged pieces. Produced in low quantity in four different variants.
Hexler 4Another version of the Puzzler but with visible orientation of the central hexagons.
Kangoeroe PuzzlerA newly coloured version of the classic Puzzler.

Magical GearsA puzzle with two intersecting circles. Produced in low quantity in four different variants.
Mini KoniczynkaA version of the Puzzler, remade in Poland.
PaletteIn this puzzle not the pieces itself move but the frame around them.

Petal Puzzle (aka Triplex 3)A puzzle with intersecting circles and a 3-fold symmetry.
Puzzle Avenger (asian version)This Puzzler was made in Taiwan (not for sale in the U.S.A.)
Puzzler - AvengerRotate each half to scramble or return colours. The most difficult of the three versions.


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