Stumbling Blocks Puzzle

This puzzle model is one of my 3D Print puzzle model series. It is called stumbling blocks. The aim of this puzzle is to put all the 4 blocks into the frame. I have 2 print profiles for this model. 1 profile only has 1 plate and 1 colour. It also has storage slots in the back of the frame. So you can put the blocks in and easy for you to carry the puzzle. You can check the photos about how to place the block in the storage slots correctly.1 profile has 2 plates and 2 colours. I am using gold colour for blocks and white colour for the frame. It is good for both play and display. hint:1. On the track, but not the same way.