Zahlendreher, which translates from German as “turning”, is an appropriate name for this math-based puzzle. The objective is to arrange the 7 acrylic pieces so that in every row you have a correct equation. The difficult part comes when you realize that you can either rotate or turn every piece! A wonderful challenge that will have you seeing if it all adds up!
Made in laser-cut acrylic and stainless steel 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.