OCTIC Puzzle IV
OCTIC III and IV are more challenging than OCTIC I and II because they require orientations of the hidden edges as well.
https://www.youtube.com/watch?v=JOFoCWswPK8
The Octic is a 3x3x5 Cross Cube shape-mod. It is a very high-quality puzzle that feels sturdy and turns smoothly out of the box (some low-weight lube will help it perform even better). This particular puzzle features 4 different types, all of which are essentially the same but with some minor differences in the colors.
Octic I, II: Features black plastic borders on some pieces. Octic I has Yellow opposite Pink.
Octic III, IV: Features no black border. Octic III has Yellow opposite Pink.
Enjoy !