Quote Originally Posted by sohom View Post
that dos not matter

If Prisoner B said in open (in present of A & C),that his assumption/answer is Black hat,that does not give any extra hints for Prisoner A & C,cause they already can see : B wared White Hat

Same thing applied for Prisoner C to.
Even if no one revealed his thought, the other 2 still could have an idea of what he thinks his color is because he didn't won (no clue is a clue) .