The pieces are made like this: two pieces that fit togather like so: ,-------.----. | __/ | | (_ | | _/ | | ( | `----`-------' are drawn like so: ,-------. .----. | __/ __/ | | (_ (_ | | _/ _/ | | ( ( | `----` `-------' here are the pieces:
Source: https://ascii.co.uk/art/puzzle