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hanayama Vortex Puzzle£9.62
Hanayama is world renowned when it comes to designing and making high quality cast metal puzzles. The puzzles are the right size; they can fit in your pocket to bring out for puzzling fun at any time. They come in a range of difficulty ratings; from easy to the very difficult level 6/6.
It's just so satisfying when you solve one yourself so join the fun and collect them all.