Not positive if this is how it is, but the way we play live is that to win the pot, the person with last action (bet or raise) has to show. If the other person shows first, they can muck, or if it was a stone cold bluff, they have the board or something, they can muck without seeing the other hand. They risk mucking the best hand or mucking when it's a chop, but they are allowed to do that. Not sure about in casinos
and such, and if it's a home game, it's anyone's guess.
The one question I have, is if the river is checked down. 2 possibilities.
1. Absolutely no action, just some calls of the blinds PF and checks all the way through
2. action on flop and/or turn, no action on river.
In #2, does the person last to act on the turn (and if no action on turn the river) have to show first? And how does it work in #1? Thanks.