As of the last day, there was an undisclosed rerate, which contradicts the bonus threshold lowering to address deflation recently. Any explanation?
We’ve been testing the rating programming on both the current system and the MUIR test system, and found some programming bugs that have been corrected on the current system ahead of this final rerate on this server.
Update: My bad here, I made what I hoped was a minor change but I blew it, and it started affecting ratings in a big way starting in December of 2007.
I’ve stopped the rerate, fixed the bug (I think) and am testing the code carefully to see if it works. I think it does.
I have restartedt the rerate back at December of 2007. Everything should be fixed by tomorrow afternoon. Thanks for bringing this to my attention.
Thanks! I’m surprised it hadn’t come up. I noticed it hugely here in AZ because a particular player I know started off with a non provisional 2100 and originally had a 1900 floor, but it dropped to 1800 and with how many games played, it made some waves
We did test both the data corrections and the corrected formula coding on our testbed server and over 3/4 of players will see a net change of under 2 points, about half will see no change in their rating expressed as an integer.
But I broke protocol on the fix I tried to make yesterday, and that was a dumb move on my part.
The good news is the corrected code passed for 100% of the affected events, and the restarted rerate is almost through the affected months (December 2007 through August 2012), though it will take a while for MSA to get updated to reflect those now-corrected ratings. MSA updates are always done in descending date order, so that any new events get updated first.
How long do you think it’ll take? Here’s an included example of what I currently see, the floor was fixed up to 2013 but hasn’t rated after
The rerate itself is up to 2020, but the rate at which it is updating MSA lags behind that, it’s currently in early 2009.
Is the re-rate complete? Some of my post event ratings and the following pre-event ratings still don’t match.
The rerate completed on Wednesday, but the legacy MSA system is still catching up to it.
My guess is MUIR will be up – with up-to-date ratings – before MSA catches up.
Anxiously awaiting MUIR to go live since I did well Thursday night for a change.
looks like https://ratings.uschess.org/ is up, but very slow.
cannot does not allow me upload yesterday’s spooky event,
It is NOT READY YET!!
Staff have been given the OK to log in and run some final tests on it, but it is not yet open for TD logins. That should happen in a few hours.
Tuning the system parameters and database for production use and speed is something that’s kind of hard to simulate, so that’ll be an ongoing task for a while.
Not all the indexes have been built yet (having them in place slows down migration a lot) so that’s still affecting system speed.
We’re currently testing payment processing.
waiting for the green light
Yup, the natives are getting restless.
Just checked the muir for the aforementioned player:
Still appears to have lost his 1900 floor (now 1800) despite being above 2100 beforehand.
I’ll look into this, could be an issue with the migration.
The player’s rating graph shows a peak 2084 in the “computer” era since 1990. Did their 2100+ come before that? For my graph, I lost a few points but stayed above the threshold (1908 → 1904 ) to keep my floor at 1700. Those 4 points were credited from the bonus point change for 2025 events. Have they now been lost? I bet there are players who have dipped below a new threshold and then “lost” their new floor this way.
The further I dig into this one, the more complicated it gets.
I do not see an event in which this player ever hit 2100, which is what it takes to get a 1900 floor
I also do not see a 1900 money prize floor entry. or a 1900 manually entered floor.
There are some records from deleted events showing this player having a floor of 1900 but all active records only go up to 1800.
This player’s ratings history starts at in 2018 in the high 2000’s, but the ID is one that would date back to at least the 1980’s. We may have to research this one in the printed rating supplements to see if there’s an older 2100 rating from an ID that got purged when the player’s membership lapsed.

