Get ready for a real mental workout with this new concept in cubic colour sorting.

The challenge cards show the patterns on the front and the backside of the cube. Use all seven pieces to perfectly match the designs and form a perfect 3x3x3 cube. The real challenges are in working out how the pieces you can’t see fit in the internal space. This innovative brain teaser will test problem solving, spatial insight and reasoning. The booklet provides 80 tough challenges and is sure to get your synapses sparking.