It took me a while to solve this puzzle :D Great design as always, Martin! I was thinking this would be a great gift for kids in kindergarten, but now I am not sure, if they manage to solve it :)
pieces without numbers - 0.2mm layer, 2 walls, 10% infill
Great print for a quick gift. My nephew loved it. you can print different y parts in different colors to make it more interesting. I printed an additional gold star, just for fun.