

Puzzle Archimedes
54.90 CHF - available 9
Discover one of the oldest known mathematical puzzles, developed by the famous Greek mathematician Archimedes about 2,200 years ago. The puzzle consists of 14 pieces of various shapes, and the challenge is to combine the pieces to form a square. Mathematician Bill Cutler determined in 2003, with the help of a computer, that there are 536 unique ways of assembling it into a square shape. Despite that, it's hard to find even one. How many do you think you can find?
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Helvetiq
Helvetiq was created in 2008 with a game about Switzerland. Hadi Barkat, the founder of Helvetiq, was preparing for his naturalization test and asked his Swiss friends many questions about Switzerland. But they knew less than they thought and so the idea was born for the first Helvetiq game, which is now a classic. Now you can find the exciting, instructive, funny and entertaining games and books at Stadtlandkind.

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CHF 8.00 (Economy), CHF 9.50 (Priority)Free shipping starting at CHF 150.00
