Impossible Puzzle 7

This is a geometric dissection puzzle, composed of four identical arrow-shaped elements housed in a square tray.
Despite its conceptual simplicity, the object is immediately intriguing.
The main structure is the tray, a low-profile frame that precisely defines the play area.
Within this boundary, the four pieces are presented in distinct colors (as seen in the image: green, black, orange, and white), an aesthetic choice that not only makes the puzzle more visually appealing but also helps to distinguish them during the attempt to solve it.
The essence of the challenge lies in the ingenious shape of the individual elements.
Each piece, while being an arrow, is shaped to have notches and indentations that must interact perfectly with the other three.
The goal is to manipulate and rotate these four elements until the unique orientation is found where they interlock, completely filling the square defined by the tray without leaving any empty space or overlaps.
It is an excellent exercise in spatial thinking and patience, a classic example of how simple geometry can hide a complex solution.

Its realization is optimized for 3D printing: the parts are simple, do not require complex supports, and printing is quick and economical in terms of filament.
Once completed, the finished object is more than just a decorative item; it is a stimulating desk pastime that offers a guaranteed intellectual challenge, perfect for a short break.
Furthermore, the possibility of customizing the four pieces with vibrant colors makes each set unique.
It is an excellent project to mass print for original and handmade gifts, offering a tactile and satisfying activity that continues to entertain even after the solution has been found.
If you really can't do it then below there is the solution to download!
Have fun!