Insane River Bluff Raise worked

[RobNottsUk]

I think the SB was on a flush draw, and put Hero on Nut Lo draw. HU he decided to semi-bluff raise the turn, to set up his river bluff if he missed. Then he folded (with or without pair K's or Q's) because there's 3-str8 on board and didn't think he'd be raised by someone without the nuts.

If he did have AA or a K, then his river bet was a mistake, he ought to have check/call, trying to induce a bluff in a large pot.