Uwe Meffert started designing rotational puzzles in 1970 with the invention of the Pyraminx.
The Hollow Series presents an intriguing, innovative advance in twisty puzzles. The no-core puzzles’ movements are unlike anything experienced by even the most experienced puzzle-solver. With a combination of inventive gameplay and stunning design, Meffert Hollow series are one part gift, one part puzzle, one part treasure!
. for Ages 14 and up