Hanayama Cast Huzzle (Puzzle) Cast ROTOR

Hanayama Cast Huzzle (Puzzle) Cast ROTOR

Difficulty Level 6

Pieces of the same shape are intertwined.
There is a notch in the place of the piece, and it seems that it is not a maze at first glance that each piece passes through here.
You can't remove it unless you take 23 steps at the shortest.