Square Puzzle Brain Teaser Impossible Challenge

Can you fit the extra piece into the already full puzzle frame? The first pictures show the frame already full of pieces and the extra piece in its little place. It&#39;s actually much harder than you think!!! If you need the solution, it&#39;s shown in the other pictures. >>>edit<<< I have altered the outside frame to match the other puzzles & made the “Pennies” the same thickness as the peices in the other puzzles I started creating these to improve my CAD skills, but found I rather like them. The other puzzles I have created are here: https://makerworld.com/en/collections/14368922-puzzles