Lewis loves puzzles, he's done them since he was two, he's four now. He's got a 4 pk of toy story ones, smallish pieces 12, 16, 20 & 24 all mixed in the box and he'll sort and do all 4. He lives the big floor puzzles too, 30 pieces. A lot of it is memory, the more he does them the more he remembers where the bits to for nxt time.