Holistic Ring was conceived by Bram Cohen. He decided to come up with a design which has a nice holistic finishing move, which makes this puzzle quite hard to solve for a four-band puzzle ring. This is the interlocking metal version, a bit more expensive than the
plastic version, but very good looking.
Watch the
YouTube video.
Read more at the
Shapeways Forum.
Read more at the
Non-Twisty Puzzles Forum.
See also the version by
PuzzleRingMaker.
This model has a size 12 ring. Please
contact Oskar, if you are interested in buying this puzzle ring in a different size.