|Other Retailer||Price Checked Time||Their Price in NZD||Our Price|
|Amazon UK||5 days ago||29.71||$19.72||You save $9.99|
|Amazon US||9 days ago||20.28||$19.72||You save $0.56|
Take two two numbers, that is! All you need to solve these tricky and entertaining binary puzzles are 0, 1, and a little cleverness. The aim is to fill in the grid with zeros and ones until there are an equal number of each in every row and every column. But no more than two of the same number can be next to or under each other, and no two rows or columns can look exactly alike. Each puzzle has only one correct solution and there's an explanation of all the strategies that will turn newcomers into masters. Start with the easier ones, and as your skills increase, tackle the super-challenges. Puzzle lovers will find BINARY a brilliant new spin on Sudoku!