Ideas for developing a Scrabble-like game for blind users

Hi all,

I am in the process of developing a game similar to Words With Friends or Scrabble so
that blind users can play this game with their sighted friends online. The app will be built for iOS and is for a final year
computing project so it is intended to be free to play.

I'm looking for any and all ideas of how I can allow this for blind users. My idea is that everything will be the same
as the current market apps but there will be an overlay that provides additional features which try to provide blind users
with the kind of information that sighted users look at when they view a Scrabble board.

Is this the right way to go about this or should I be looking into other ways?

If it is the right way, is there any ideas for the kinds of features that should be included?
For example, an idea would be if the user has created a word from their 7 letters, they can ask the overlay for coordinates
of where that word can go and then the user can scroll to those coordinates and decide if they really do want to place the word there
by looking around the area and seeing what letters are nearby.

This is just one idea but there may be a better way.
To summarise, the question is: "What is the fastest way I can provide a blind user with the most amount of information from an in-game Scrabble board?"

Many thanks for any ideas you have,
Wordsmith