At IPP 28 2008 in Prague the participants received a cardboard drawing of this puzzle. I enjoyed making a few, this is the last one I have. An additional slide holder with the history of the towerMaterial MDF.
Put the same colours together. The white center piece can only slide up and down.Pieces cannot fall out due to transparent top plate.Matererial. Acryl.
12 pieces with inlaid letters. Pieces with tongue and groove.Slide from the starting position ALBWHITE CK!!ET TO !WHITE !BLACK! On the back there is a slide up and down. This slide changes the free hole.Then slide to BLACK! WHITE! easy?Material Acrylic.
Slide de numbers from 1 to 14. The center piece can only slide up and down. Pieces cannot fall out through the transparent top plate. More assignments on the back of the puzzle. Material MDF.