I'd really like to know what Durrr put Ivey on, though. It obviously starts preflop: What hands over-flat (is that a word?) and then re-raise? Ivey is unlikely to be strong preflop. He would have squeezed with his big hands most of the time. He also can't really have trash since he would be more likely squeeze with that as well, so that leaves middling hands. Suited connectors, suited aces and PPs.
Then Ivey backraises. This, in my mind, reduces the mid PPs. I think stacks are a little awkward for turning 99 into a bluff. Not impossible, just a little unlikely. Stuff like QJ and other hands may be happy to take it down right away and feel good about folding to a reraise, though.
I feel like some of the action was cut after this. I assume Durrr flatted the backraise and then donked the flop?
Once Ivey calls, what's his range? A monster is exceedingly unlikely. QQ and KK for reasons mentioned above, TT as well (although not quite as heavily discounted as QQ/KK), but of course he could have a straight. But I think a straight raises this flop very often. Not necessarily because of the flushdraw, but more so because there are a lot of action-killers that can come on the turn, and Durrr's range is heavily weighted towards hands that will be willing to put in more money right on the flop anyway.
So once he calls the flop, what's Durrr supposed to think? My guess is something like JJ/QJ/JT, maybe T9 or AT, plus some flushdraws. Slowplaying KQ or KT or even QT seems unlikely for similar reasons as the set. Either way, Durrr probably figures he'll find out once he bets the turn again. But he doesn't get raised there either. Now flushdraws and bluffcatching draws (Tx/JJ/QJ) should be what he's looking at.
It's elegant that Durrr makes a committing bet on the river. He makes a bet that essentially prevents Ivey from bluffing, because Durrr doesn't have room to make a big fold. He can, obviously, fold the hand he actually has to a raise.
Now, when I say that Ivey considering a call isn't "amazing" I don't mean it in the sense that it's in any way an easy call. I just want to stop anyone from thinking that Ivey has a killer read on Durrr. The level of thinking is going to go pretty deep here; how does Ivey think about the fact that Durrr makes a committing river bet? If he has the nuts, would he make it that size? Wouldn't he give Ivey rope to make a big bluff on the river? Or does Durrr know that Ivey knows that and therefore makes a bigger bet? Etc. It's a little mind-blowing.
And pretty cool.
