This is a huge version of the
Sixth Sense puzzle ring, meant as big demo model. This six-part puzzle ring is a design by Bram Cohen, and developed by Oskar van Deventer. It is a "size 190", with an inner diameter of 60 mm and an outer diameter of nearly 90 mm. A solution was worked out by Daniel Danzi and D=D=, two puzzle-ring enthusiasts from Virginia, USA.
Watch the
YouTube video.
Watch the
solution video.
Read at the
Shapeways Forum.
Read more at the
Twisty Puzzles Forum
Please
contact Oskar directly if you are interested in obtaining a fully colored and assembled sample of this puzzle.