Tetrakite No.2 puzzle with box;
print it and try to solve it;
(The puzzle pieces are used on both sides)
More information about puzzles whose pieces consist of simple geometric shapes (polyforms) can be found at
https://www.pentoma.de/
auf https://www.pentoma.de gibt's Infos, Downloads von Lösungsprogrammen, Bastelvorlagen, Figurenvorlagen von Legespielen wie Tangram, Soma-Würfel, Pentomino, Hexiamond, Tetrahex etc
The author hasn't provided the model origin yet.