Cast puzzles are challenging and have a higher difficulty level than wire puzzles. People who have tried them have felt a particular stimulation. They realised that force is not necessary and this aroused their interest even more to discover their secret.
Vortex is an extreme puzzle. Each of the three pieces has a spiral (vortex) and two protrusions. When assembled each piece is flat, but to unpick them, you have to think three-dimensionally!
Test your patience with the “Vortex” puzzle from the Hanayama range!