On an ordinary wooden board, there are iron plates and screws to fix them. Move the screws to other holes and make all the iron plates fall off to pass the level successfully. Please pay attention to the order of moving the screws, which is very important. In particular, be careful not to let the shaking iron plates cover the holes, which is not a good way to pass the level.
1. Added new game levels and reduced the difficulty of some levels.
2. Fixed some known issues.
