I bought this Puzzle for my 9 months old daughter. At the beginning it has the parts only taken out, but now with 10 months they tried deliberately to put the parts back. Does not work still, but practice makes perfect. I like wooden toys very, so it was clear to me that a wooden puzzle must be found.
The puzzle is super processed and saliva. This has been extensively tested by my daughter. I can only recommend it further and find the motives very nice. Otherwise, I have also made sure that repeat the colors and patterns on the board, so that an allocation of puzzle pieces is simpler.