Pineapple Secret (twist, black)
It’s also a Himitsu-bako that has 18 plates and 33 moves. Of course, Then the movement is also different. The normal pine (RF-9) has a basic shape. But, this pine has another twisted shape. One sub mechanism is placed twistedly. Then those 2 sub mechanisms will obstruct the main mechanism at different place. Then this arrangement makes the answer of this twist pine different between normal twist.