First chose a difficulty by typing ‘beg’, ‘int’, ‘adv, or ‘exp’ – Beginner is 5 degrees, Intermediate 2.5 degrees, Advanced 1 degrees, and Expert 0.5 degrees. Then, enter the largest city (min 10K population) in each grid square of the size based on your difficulty. Green squares contain answers. Adv and Exp levels may take a few moments to load.
Enter level to begin ('beg', 'int', 'adv', or 'exp').