Twisted Tetra was invented by Volker Latussek. The object is to put eight the eight tetromino pieces into the cage. This elegant puzzle is delightful to solve. That is, it is much less extremely hard compared to Volker's other box-packing puzzles.
Watch the
YouTube video.
Read at the
Shapeways Forum.
Read more at the
Non-Twisty Puzzles Forum.
Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or
contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.