on the button, Mississippi straddle $5... (for those of you who arent sure what a mississippi straddle is, its basically straddling on the button and SB/BB have to act first by calling the $5 to play) 6 People limp in calling the $5, i look down i have K5dd so i just check my straddle. FLOP: A 10 5dd checked around so i bet $15 one caller, everyone else folds. TURN 5. He leads out $45, I flat. River 2d. He checks i bet $100 and he jams. Both of us are 300BB Deep

Board: A105dd 5x 2d

MY HAND: K5dd
Opps hand:xx

I didnt put him on AA/1010/105 since he never raised the flushdraw/gutshot board... Do i put him on 52 and fold? or put him on 34 and call? Is he bluffing?

I'd bet the flop a bit bigger.

Turn is interesting and I could go either way. I'm sure plenty will say raise, and I don't disagree (I was going to tell you to), but him folding an Ace or a semi-bluff ott is disastrous, and some live villains, even tho most of them suck, will put 2 and 2 together and realize that since you straddled you can really easily have a 5 and therefor fold. There are also no really bad rivers for us, save for maybe an ace, so we don't have to protect against anything, and shoving over a river bet from villain will look bluffier than raising turn and shipping river imo. I think we're a lot more likely to get hero'd with that line, especially if the FD bricks.

River I'm somewhat inclined to stack off and call it a cooler if we're beat I think. People suck enough live to have worse for value here. It's probably pretty close tho, and it's a sweet line from villain with A5 (his mostly likely value hand we lose to imo) or TT or something. It comes down to gameflow and reads for me, which you haven't provided. There are a number of factors that could swing this from sigh call to must fold, or vice versa.

Edit: People don't get in 300BB's live very often without something pretty nutted, so folding is probably better. But like I said it's pretty difficult to know when you've provided no info on villain, even physical appearance etc.

Young azn, playing 3-4 hands an orbit, showed a bluff to me before... a5 confuses me as well since he has 2 pair shouldnt he reraise on flop to protect his hand and build a pot? so many draws out there

Call river probably.

What's the exact position of the villain at the table?

Yeah I think the exact position actually matters here

I'm the button. He's big blind

You have K5dd so he can't be overplaying Kxdd or 5xdd. River is a fold. I can't see him leading turn then check raising river with a flush after check calling flop. That only leaves full houses, none of which you beat obviously. Also AA, TT can still be in his range as he could've tried to limp raise pre. A5 is another hand he could have

It's EXTREMELY RARE that somebody bluffs the river.
Based on the action, I think he put you on a flush draw. (you just called his bet and didn't reraise)
So I think he expected you the bet the river when you got there.

The only hand that makes sense from a good player is A5. (Just because you didn't think he had AA or TT, doesn't mean he doesn't. He may have expected you to raise the straddle, and when you didn't you foiled his plans to reraise big. I've seen guys smooth call TT on a flushing flop, and only start to build a pot AFTER they've caught a boat.)

If he's not a good player, he could have any 5,X or smaller flush.

Since there's no description of our V, I leave it up to you to decide. But you can take 5,2; 3,4 and 2,2 out of his range. No poker player in his right mind is calling a straddle and then betting $45 on a 5 turn with any of those hands.

Reads are everything in this hand. If villain is even a little bit solid here, it is a snap-fold, as he's rarely overplaying 5x in this spot. But if villain is a drooler who will have 85 and think ZOMG TRIPS!!! then it is an easy call.