All-In equity calculation. Interesting spots.

[YurkoP]

Hey guys, I have few hand examples where PT4 gives us controversial results when calculating All-In equity. Below are attached two files with the hands.

File pt4_forum_1.txt - two 'exactly' same hands, but only for one of them all-in equity is calculated. What is PT4 logic there?
File pt4_forum_2.txt - following this article https://www.pokertracker.com/forums/viewtopic.php?f=45&t=32184 PT4 should not calculate all-in equity for the hand #000000000003 (hero with A2o) but it does, and it does not calculate for the hand #000000000004 as expected. Why it's like that?

Thanks for your help!

[Flag_Hippo]

The difference is when a player calls an all-in and folds versus when they have not called an all-in.

Hand 1 - Player 3 calls an all-in and then folds.

Hand 2 - Player 3 calls and then folds to an all-in.

Hand 3 - Player 3 limps on the button before Player 1 completes the BB and is all-in.

Hand 4 - Player 2 calls the all-in from Player 1 and then they fold the flop.

[YurkoP]

Hi Flag_Hippo, thanks for quick reply! Now it's kind of clear if we are talking about sequence of actions, but what is the logic behind this? Why pt4 thinks that we can calculate equity in the one spot and it will be correct, and why it won't be correct in the second one? Thanks!

[YurkoP]

Do you have any general rules when we can/can't calculate equity in multi-way pots? Just don't want be guessing what is going on next time I'll find similar two hands) Thanks!

[Flag_Hippo]

Adjusted equity is not calculated in any situations where a player called an all-in and later folded. To do so introduces a systemic bias against you in these statistics.

[YurkoP]

Hi, flowing your logic next two hands should calculated but they are not. Would you take a look please?

[YurkoP]

Hi, two more questionable hands. PT4 calculates all-in equities correctly here but all-in adj. values looks wrong. Following my calculations all-in adj. for the hand #07 should be equal to '-56.42', and for the hand #8 it should be equal to '-170.73'. I'm checking it from player_2 point of view.

[Flag_Hippo]

Hi, flowing your logic next two hands should calculated but they are not. Would you take a look please?

I have asked for clarification on that.

Hi, two more questionable hands. PT4 calculates all-in equities correctly here but all-in adj. values looks wrong. Following my calculations all-in adj. for the hand #07 should be equal to '-56.42', and for the hand #8 it should be equal to '-170.73'. I'm checking it from player_2 point of view.

What are you seeing in PokerTracker 4 and how did you calculate your figures?

[YurkoP]

hand #0..7
our equity on preflop (all-in street) is 34.089%, pot size is 386 chips, we put 188 chips in the pot, so our all-in adj. should be equal -56.41646=386*0.34089-188

hand #0..8
our equity on flop (all-in street) is 6.970% pot size is 420 chips, we put 200 chips in the pot, so our all-in adj. should be equal -170.726=420*0.0697-200

An this is what I see in PT4 https://gyazo.com/ec0fbb15e3e64049809c148f3fdb4f07

[Flag_Hippo]

Thank you. I see an adjusted amount of -170.73 in a pre-release build for hand #7 but no change for hand #8. Please attach the original hand history files for hand #8 and this post to a Support Ticket, along with a link to this thread, so we can investigate that.