Casse tête en metal de la série Cast Puzzle et de difficulté niveau 4 (sur une échelle de 6).
Description éditeur en anglais:
The Radix is a puzzle known for both its monumental looks and somewhat organic styling and movement.
The entire unit gives off an air of antique wisdom, the pieces joined at the base in chaotic harmony. The name comes from the mathematical term,"Radical axis", and also means root in Latin. The innovative concept that it is, you might even be tempted to call it "radical". Whatever you call it, have fun.
The key word here is "sprout".