CALculating minds will appreciate this exciting new challenge from Lovatts. CALkuro (inspired by the Japanese KenKen®), is two parts Sudoku to one part Kakuro. Add half a part of Addoku and a splash of Shapeshifter…

To get started, watch this brief tutorial by Christine Lovatt then head over to YouPlay.com to be among the first to sample and solve the real deal.

»Click here to play CALkuro on YouPlay