18 different pieces consisting of 2 squares with tail(s)and or head(s). Various assignments in the box. Main assignment. Place the pieces in a 6x6 square and make 18 complete Christmas trees.
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.