https://forumserver.twoplustwo.com/1...14/?highlight=
https://forumserver.twoplustwo.com/1...10/?highlight=
cliffs:
as your opponent's calling frequency goes up, less and less draws become profitable as bets or raises on every street leading up to the river, this goes all the way back to preflop. As your opponent's folding frequency goes up, more and more draws become profitable as bets or raises. However, there's a trade off here that is most apparent on the river:
if you're against a player that folds a lot on the flop and turn, but this time the opponent has made it all the way to the river by calling your bets, you should assume a stronger range for that opponent on the river than you would assume for a player that calls the flop and turn more often(the more often they call, the more bluffcatchers they will hold on the river and the more you can bluff because of this).
There are players that have good folding frequencies on every street as a function of range composition and pot odds. This player type is actually the one that will allow you to bluff at or near optimal bluffing frequency on the river; it will be a necessity for maintaining a minimum ev to have bluffs in your river range at frequency depending on the price you're offering your opponent. This is why you don't need to bluff with low equity hands on the flop and turn vs players that will call down too much on the river; you don't need them in your river bluffing range to get value because they just get in the way.
Quote:
But i have a big problem with bluffing on the RIVER!
Now it should become apparent that the two player types that you can bluff the most on the river will be the opponent that has good fold frequencies on every street, and the opponent that continues often vs early street bets yet folds a lot on the river. Vs both player types heads up out of position, you should bluff with hands that meet these criteria:
a) hands that are at the very bottom of your available range
b) hands that block your opponent from holding many strong hands
vs the player that has good folding frequencies and I'm holding the bottom of my range, I consider my value betting range and how much I want to bet with different parts of the available range. Usually, this means betting between 1/2 pot and pot with value hands, so those are the sizes I choose with my river bluffs. With the good blocker hands, I try to bet at least pot whenever possible; smaller bets tend to get called more often by good players and hands with good blocking qualities tend to have some showdown value, particularly vs good players that don't call at unprofitable frequencies.
vs the player that calls a lot on the flop and turn yet folds a lot on the river, you should still bluff with those hands that are at the bottom of your range, up to the point where (your bluffing range) meets (the opponent's worst bluffcatcher). Be wary of taking this to the extreme, as it only takes one hand where the opponent says "aw screw it I call." with a hand that you had assumed would be folded on the river in order to wipe out your previous bluffing profits. It would take a good read to bluff a lot more than suggested by the pot odds you're offering.
When you're in position on the river heads up after betting the flop and turn, the circumstances are a little different because:
a) your opponent has checked
b) you can close the action with a check and end the hand
in this situation the out of position player has an additional liability, and that is the issue of the in position player being able to profit by checking, as he will win a fraction of the time(just the other day I was against a player that doesn't bluff heads up out of position without the betting lead, I checked back my 9 high and beat his 8 high).
This is why the out of position player should fold a little more often than the in position player would facing a bet of the same size. If not, the in position player may check back for higher expected value than bluffing would offer. The result is that when two strong players play the river, the in position player will bluff at frequency that makes the out of position players bluffcatchers breakeven as a call or fold, while the out of position player will fold at frequency that makes the in position players best bluff receive the same expected value as it would receive as a check.
Vs other player types when I'm holding the bottom of my range on the river, I decide on the betsize that I believe is just enough to make my opponent fold, while telling a story that makes sense to my opponent.
All that said, it can be hard to pull the trigger on a big river bluff specifically because you can't improve to a strong hand anymore. The draw missed and you have nothing. It's something that takes some getting used to.