Correct river decision after villian check behind...

[ILOVEPOKER929]

"Wow down ILP. First off, you've zero evidence that I knew how to play poker to begin with!"

I assume most people on 2+2 know how to play poker. I just like giving people a hard time.

"And your first post did elude to this being a decision between b/f and c/c."

Let me make something clear. In general this spot will be a b/f or a c/c decision. There are plenty of exceptions to this general idea, but I dont think there is enough evidence to suggest an exception applies here.

"You seem to have sided quite definitively with the c/c side given the reference to this players aggression by the OP and the actions through the hand."

Yes I think it is very obvious that bet/folding this guy would be a terrible idea, yet bet/calling him should also feel terrible. Check/calling is the only viable line here IMO.

"May I ask why you think this villain checked the turn? 2 big diamonds? Didn't want to fire again on the come to possibly win it outright and maybe get a free show? Afraid to semi-bluff? Knows he's crushed? Yet you fear the bluff/raise on 5th?"

I have no idea why villain checked the turn. Most often it is becuz he has a draw like KJ or two diamonds. Will he have some other weak made hand? Possibly, but with no read Im convinced it is still best to assume he's on some kind of a draw the vast majority of the time and check/call the river to induce a bluff from some lesser hand and minimize our loss when he does indeed have two diamonds.

"Can you see how an up-and-comer like the peg can't figure this psychology?"

No one can figure out the psychology of this guys play cuz we dont have that strong of a read on him. In the end were still left guessing. Ive told you what I would do and why. Now its up to you to figure out what you think is the best line on the river.