Product description :
A mind-stretching mathematical puzzle to test your numerical prowess to the limits - if you like Sudoku you will love this! Twist and turn the dials to crack the code- each row much equal 40.
Description
Description
A mind-stretching mathematical puzzle to test your numerical prowess to the limits - if you like Sudoku you will love this! Twist and turn the dials to crack the code- each row much equal 40.