''Reynolds thought about this and finally told Craig whether or not he knew whether he could have decided had the other one answered the second question instead. '' Arch Sir, I think the above sentence concludes that one amongst A and B is a kinght and the other is knave. So there is no possibility of them being knight, knight or knave, knave as you suggest. For the rest, Nirman has already solved the puzzle. if you think you have a different reasoning, lets see it. Jabarjasti garera hunna yar, the best way to shut others mouth is to come up with a logical reasoning.