The puzzle is great, however my son who is 4 is still having a little trouble with it, but he loves puzzle so much that I'm sure he'll master it. I love how the picture is painted on the blocks and stuck on them with stickers.
I bought this puzzle for my 3 year old for Christmas and it is really neat! The cubes are very sturdy and I think they will hold up well. My daughter hasn't played with it much yet, but when she has she has been amazing by it. Also, the little see-thru carrying case is a bonus!