12.2 cm x 12.2 cm x 0.8 cm / 4.8 in x 4.8 in x 0.3 in
Fit all 9 of the different shaped pieces into the frame. You will have a hard time solving this one as there is only one solution.
Made in laser-cut wood by Siebenstein-Spiele. Based in Munster, Germany, Siebenstein-Spiele was founded in 1992. Although the company is mainly known for board games, Siebenstein-Spiele also makes many wooden puzzles, several of which have been designed by company founder Jürgen Reiche.