Using Brick or a Procedural texture to shade a chess board A beginner here, hi!

I'd like to create a chess scene, done modelling everything, although have a question with the board itself. 
I know that there are much easier ways to achieve it but for the sake of learning procedural texture, I wanted to create it with brick texture.
Here are some screenshots;



But, I'm stuck. So, is it possible, am I stalling my learning process and probably you as well xd? How can I change this randomness? 
Thank you very much. 



Ge, thanks for your answers.
Here is the result, my first non-follow along tutorial render ever.
I would use a checker texture (Or use this answer to modify the bias in the brick texture to behave like a checker) and darken the color with the black outline of the brick texture afterwards :



Note : The scale of the checker texture must be 2 * that of the brick texture, otherwise the edges won't align.