This puzzle was in a Dutch magazine "Margriet". Made of cardboard. I made this on transparent overhead sheet. In 1993 you were still allowed to come with a copy. Nowadays you have to participate with your own design.
Old puzzle. Copy produced by puzzle design Ton Delsing.9 cardboard pieces. The puzzle was patented in 1911, This variation on Thurston's puzzle was used as an advertisement for soap. The idea was to arrange the cards so that each center circle contained four different colors and each half circle contained two.
Place the pieces in the frame, Place the black piece with the holes on it. You should now see the 0 and 9. (start position). There are several ways to do this, There is only 1 good to slide to the numbers 1 to 4. Then slide to the numbers 5 to 8, Then slide the 1 at the top left and the 8 at the bottom right, Place the black piece on it so that you only see the 1 and 8. (end position)Material acrylic.