Anthony Greenhill's most amazing Square-1 modification.
The quality is extremely good and so twists are very smoothly.
In solved state the Square-1 mechanism is turned by an offset of about 90 degrees,
which makes solving even more confusing, because different colours appear on each puzzle layer to solve.
Size: edge length 13.4cm
This puzzle was also inspiration for FrÃ©dÃ©ric PlatÃ©us to build his
"Tribute To Anthony Greenhill".
External LinksTwistyPuzzles: Greenhill's Tetrahedronhttp://twistypuzzles.com/forum/viewtopic.php?t=3787TwistyPuzzles: Greenhill's Tetrahedron scrambled picshttp://twistypuzzles.com/forum/viewtopic.php?t=3825