This is SB vs CO. SB 3b 11.7% OOP. CO defend 13% which includes AK QQ slowplayed at 25% freq and JJ 75%.
Ranges are a bit too wide but they'll do it.

Here's the root. Only hand OOP rly bets is A8s.

Flop decision for CO:

SB raises the 25% bet only with some nut flushes and KcQx AcKx.


SB only leads out small (33%) on 4 flush turns.

Here is CO turn decision:


On the river there's a lot of betting by CO and SB can donk shove at small freq % (only Qx Kx). 4th river SB leads out with shove like 30%.
I only programmed donk shove no smaller lead.

Does anyone understand what is happening there?

First,

Seems silly to use bet size restrictions of 1/4, 1/3, and 1/2. The only reason there is any donking range is probably a function of the bet size restrictions you've chosen, but I'm only guessing.

Second, the OOP player has to check range because of the monotone and straight potential of the board. The equities run close-ish, but due to the board the IP player has a huge positional advantage since equities shift drastically on many turns/rivers. This increases the EV of the IP player to be >> than the OOP player.

The OOP player's goal here is simply to get as many hands to showdown as possible. If he starts betting things he is often losing too much money on turns/rivers runouts and leaving his x range disproportionately gutted allowing IP to bet too much when x to and bluff too effectively on turns/rivers.


Also not much point in evaluating these super low freq plays.

You should probably ask specific questions. Can't see what's "fun" about the hand.

basically this.

monos being good for ip is not exactly groundbreaking stuff.