Re: K5s, posting in the CO, flop decision
 

My God what is wrong with me.

I'm now in the process of creating a code library to help answer questions like this. Anyway, here's the first fruit of this labor: how often someone will be on a flush draw given how many of a suit you have and how many are in the hand. I'm assuming any two cards right now, so real world results will be significantly different since people like to play sooted, but they're not staying in with 3[img]/images/graemlins/club.gif[/img] 2[img]/images/graemlins/club.gif[/img] or whatever. I'm using a Monte Carlo simulation of 10 million hands, good enough to get it to 2 sig digits or so, as if you needed it.

http://www.ethelthefrog.net/sa/flush-draw-odds.png

So in the given hand, we have no clubs and we're 7 handed: There's about a 28% chance of someone having being on a flush draw. That's a lot less than I thought!

How many if people like to play sooted? I dunno yet, but the tighter people play, the loewr this figure will be. More testing required!

Re: K5s, posting in the CO, flop decision
 

Poker Analyzer says that against 7 random hands if we hit the straight on the turn and a [img]/images/graemlins/club.gif[/img] hits the river we:

23% win outright

34% split 50/50

13% Split 3 ways

28% lose

So with all those other callers potentially having a king and the two flush I don't see how we can make money by calling this flop. If you do hit on the turn it's almost a 50% chance that someone will hit with you and will be raising. Then if the [img]/images/graemlins/club.gif[/img] hits the river you're really out some money if someone had been calling all the raises on the turn.

IMO, the only way this would be a call on the flop is if we were using both our hole cards for the gutshot. That would improve things a lot.