My daughter has been given the boot by 2 1/2 years and 26 parts puzzle she could almost instantly alone. A short time later, 48 parts were no longer a problem. Nevertheless, it brings out the suitcase again and makes the four puzzles mostly direct succession.
She finds it a shame however that a completed puzzle then does not quite fit into the suitcase.
The quality of the parts is good.
Strong buy recommendation!