Which puzzle is appropriate for which age?

For children between the ages of 6 and 8, there are puzzles with 25 to 100 pieces, ideal for beginners. For slightly older children between the ages of 9 and 12, there are puzzles with 100 to 300 pieces. Teens between the ages of 13 and 16 can challenge themselves with puzzles from 300 to 500 pieces. And for adults ages 17 to 99, there are puzzles with 500+ pieces for hours of puzzle fun. These are general jigsaw puzzles. 3D puzzles and puzzles with special shapes offer a different challenge so the age range for puzzling may be different.