Joined: Feb '08
Location: United Kingdom
Age: 28 (M)
Unfortunately, if the cards are mucked you no longer have a hand so I agree player B cannot win but I also believe that Player C cannot claim the side pot without showing his hand since both players reached the river. And before showing his cards player C has the right to ask the dealer to expose player Bs cards.
But rules do vary between casinos. At least there's a dealer to determine the rules. It's far worse when you're among friends and no one knows how to rule without causing arguments.
Joined: Nov '11
Age: 56 (M)
Ya, I think there were a number of mistakes in this hand. First, the dealer should have determined the side pot first rather than telling everyone to roll them over. Second, the dealer should have called upon player C to show his cards in order to claim the side pot.
As it is possible that player B was bluffing and did not want to disclose his bluff, he should not be allowed to claim the pot after mucking and then seeing that his bluff would have beat player C's bluff if player C was bluffing. Since player B was the last to show aggression in the hand he was first to act on showdown and he tossed his cards in the muck. Perhaps a costly mistake if he had the winner.