One of the presents she received this morning was a box puzzle. It has 24 pieces, and more complex than any of her wooden puzzles. When I opened it and dumped the pieces out, I thought she would not be able to do it yet. Oh me of little faith! She methodically worked it, piece by piece, with patience and concentration, and she completed it in less than 10 minutes. As I'm typing this, she just finished the second one, also with 24 pieces. Wow!