This jigsaw puzzle was once posted on the official Sonic Channel website, but has long since been taken down. However, it has been saved on Chao Island for you all to enjoy! You can play it below.
This puzzle uses Flash, which has been depreciated by most modern web browsers. It’s likely you will need to manually activate Flash for the game to work (most browsers give you a warning popup which you need to accept you play the game).
After completing the puzzle, click the button and you will be able to download a card of the puzzle. You should be aiming for this: