Curiosi Q-puzzle (difficult pieces) - Shake 4 (72 pieces)

Extremely difficult small puzzle with 72 pieces. The pieces have unusual shapes, making it a very challenging puzzle. See photo 3 for the pieces.

Details:

* 72 pieces
* Puzzle size: 12.5 x 12.5 cm
* Puzzle box dimensions: 9 x 9 x 1.8 cm