During few weeks I have been amazed with DD and puzzles. 2 mo ago she was just getting into jigsaw puzzles and still needed me to help her with them. Then she suddenly mastered the 9 piece, 2 weeks ago 12 piece and now last night I saw her doing two 24 piece ones without any help. Those are really not that easy anymore, of course adult can do them easy but they do require some thinking compared to 9 piece ones. She is 25mo now. It looks so easy too, like it would be normal for a 25mo old to do.