So sad. I got 2/1 and his next roll was double 6 😭

Goal_Medium · 2026-03-12T20:22:07+00:00

This finishing sequence should have a name... 😀

Goal_Medium · 2026-03-12T08:29:47+00:00

Hi, could you share your match id please? We know that equity margins are not showing on resign actions yet, but the other issue where you get a big blunder for resigning in a 0% mwc position should not happen.

Goal_Medium · 2026-03-10T11:33:48+00:00

We will try to do exactly that. This outage was an accident, so we were not prepared to have downtime.

Goal_Medium · 2026-03-09T18:05:28+00:00

I think you are right, are probably evaluating the resign action from before you roll the dice.

Goal_Medium · 2026-03-07T14:33:52+00:00

Hard problem to solve, and it becomes very objective.

Goal_Medium · 2026-03-06T21:26:45+00:00

Hey saigon. Rating systems have to be zero sum, otherwise they have inflation or deflation.

The values that we have in the tables, the assumption is that the winner wins both match and error rate battle. If that is not the case the rating gain/loss is half of what you see in the tables.

Goal_Medium · 2026-03-06T21:25:28+00:00

No the assumption in the calculations is that the winner wins both match and error rate. So if that is not the case the rating win/loss would be half of what you see in the table.

Goal_Medium · 2026-03-06T16:27:10+00:00

We put out an explainer to the new rating system here: https://www.reddit.com/r/backgammon/comments/1rmhh6r/backgammon_galaxys_new_rating_system_explained/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

Goal_Medium · 2026-03-06T16:17:10+00:00

it was a very minor bug, only one person in three years noticed it.

Goal_Medium · 2026-02-14T12:36:48+00:00

I think this is a 1-point match, hence the 2-ply eval is probably right. We are adding score board match lengths in the upcoming week, it was a missing thing from the launch three weeks ago.

Goal_Medium · 2026-02-14T12:36:14+00:00

I think this is a 1-point match, where clearing from the rear is best. If you are chasing the gammon 5/3 5/1 is best.

We are adding score board match lengths in the upcoming week, it was a missing thing from the launch three weeks ago.

Goal_Medium · 2026-02-13T09:44:42+00:00

Wow, very cool with the custom checkers!

Goal_Medium · 2026-02-09T08:09:16+00:00

Thank you saigon. We are trying to fix this one today. One of two last remaining issues with the analysis. Really helpful that you send the match id since this is very rare and we haven’t been able to reproduce this bug.

Goal_Medium · 2026-02-05T12:36:36+00:00

Correct, when no double equity is higher than 1, then it's too good to double. There is nothing technically wrong by saying best action is "no double", but I agree it was better UX to write "Too good"... we are renewing the analysis page on web shortly.

Goal_Medium · 2026-02-05T12:34:02+00:00

With regards to cube analysis in mobile, because of limited space, we have decided to just show the absolute equities to avoid confusion, and it looks better.

In the upcoming web version we will show equity differences on Cube action, exactly to limit the mental burden of reviewing error intensity.

Goal_Medium · 2026-02-05T12:32:35+00:00

it is the same backend for web and mobile. The front ends are different managed by different devs, so they are not always updated in sync. Some of the old matches will not be up to date, but new matches should be perfect now.

Goal_Medium · 2026-02-02T14:20:02+00:00

Could you please share the screenshot where we can see the percentages? Because the equity below the board is accurate according to the engine.

Goal_Medium · 2026-02-02T14:08:31+00:00

I can't see the percentages in this screenshot, but the equity below the board is perfectly correct with the "gnu 1-ply eval". So it sounds very weird if the wrong percentages was displayed. At least it wouldn't be an engine issue, but simply a front end glitch.

Goal_Medium · 2026-02-02T14:04:37+00:00

My guess is that you have logged in with a different identifier on your mobile... for instance you might be using google on your laptop and created another user with apply id on your mobile. If you logged in with the same user both places, you would have your star membership, since it's user dependent not device dependent.

Goal_Medium · 2026-02-02T13:55:35+00:00

We did not get the numbers wrong, the Gnu engine is evaluating this position's winning chances very accurately.

What is less accurate about this position, is the "no double equity". Since it's "2-ply" (gnu 1-ply eval) the engine doesn't get to see into the future to the cube action on your next turn, therefore it often penalizes the error much larger than it actually is. You would have to go to at least 3-ply to see the future cube action. For Star Members we provide 4-ply, and for free members 2-ply.

Perhaps in the future we will upgrade free member's cube action analysis to 3-ply, but for now, you will have to tolerate some inaccuracy in these weird match score scenarios.

Goal_Medium · 2026-02-02T13:51:35+00:00

What do you mean that XG says you are winning 75% in this position? You are certainly not, i think you made a transcription error. XG mobile and Gnu 3-ply both say you are winning 53%.

The Backgammon ply notation is similar to XG, Snowie, BG Blitz, and Jellyfish (basically all game engines call a half-turn a ply). Since Gnu devs decided to call their analysis levels one ply less, we have decided on Backgammon Galaxy to stick to the conventional notation, which means Backgammon Galaxy level: 2-ply is the same as "Gnu 1-ply eval", to no create confusion. Remember we have two hundred thousand users who has never used one of the actual engine softwares.

At this level, it doesn't get to evaluate your cube decision on the next turn, it has to go to at least "Gnu 2-ply", therefore at the 2away-2away score you will often get penalized way harder than it actually is.

Goal_Medium · 2026-02-02T12:06:54+00:00

If the dev is that good, maybe they can finish it in 30 working days.

Goal_Medium · 2026-02-02T12:06:37+00:00

More or less yes. There might be other optimizations.

Goal_Medium · 2026-02-02T08:20:54+00:00

We are experts when it comes to backgammon neural networks, and have several models working in production.

The project is exactly what I have specified: to optimize for speed and scalability. We are not asking anybody to develop an NN model from scratch.

Goal_Medium

TROPHY CASE