I just start my journey with Django and i have problem with Choice Field. 
I wanna wanna make Model in some ChessGame and i have to make Choice Field through ChessBoard. 
I have something like this:

```
move = {
  ('a1', 'a1'),
  ('b1', 'b1'),

```

etc.
Is it possible more simple declaration of this code?
Maybe some for loop?