Review on Revitalize Your Child's Mind with Melissa & Doug's Classic Wooden Puzzles by Chris Long

Pretty good puzzle set. My two problems with number and letter puzzles are that some pieces get placed in places they don't belong (z up or upside down (e.g. 8, S, X and Z) while others fit ( E.g. I, H and N). The only thing that bothers me about the color puzzle is that the orange can be a little darker, my son confused it with yellow several times when he started using the puzzle. My son (22 months ) really enjoys playing with these puzzles, although some pieces are a bit frustrating for him.