An interesting non-twisty puzzle from QiYi. The XiangYun 9 piece / 4 piece puzzle features 9 pieces / 4 piece of clear acrylic cut into unique shapes. The idea of this quirky puzzle is to fill the base with the 9 /4 acrylic shapes (easier said than done).

Note: The pieces of acrylic have a protecting layer that can be peeled off from both sides.

Size: 160mm2 / 140mm²
Pieces: 9 / 4