A wonderful brain teaser inspired by Professor Rubik and his world-famous cube! The beautifully designed Wooden Square Number Puzzle brings together art and intelligence through beautiful vintage designs and mind-bending play. There are three levels of play, easy, medium and tricky. Players need to make all the rows, columns and diagonals add up to the same number. For the Easy level just use the yellow squares for the medium level add in the orange squares and for the trickiest challenge players need to use all three colour squares! This beautiful coffee table puzzle is made out of sustainable Bamboo and was shortlisted for Gift of the Year in 2020. This Professor Rubik Square Puzzle makes a perfect stocking filler, secret Santa or birthday present, for puzzlers age 14 years and old.