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Pack the pieces to make correct equations.

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.