You are aiming impossibly high. If k=40, the standard error of ratings based on random fluctuations alone is about 70. A single blunder which turns a win into a loss costs 40.Paul Cooksey wrote: ↑Sun Jun 13, 2021 9:17 amBut I'd think it would be ok if an improving junior who played actively stayed within 50 points of their rating while they are improving.
FIDE rating differences between countries
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Re: FIDE rating differences between countries
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Re: FIDE rating differences between countries
Fair enough. What is a reasonable expectation?
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Re: FIDE rating differences between countries
I don't think people should complain about a "trailing error" of -70, because the rating started too low and is constantly trying to catch up with playing strength, superimposed on a random variation of 70. The net result is that for an improving junior of playing strength X, rating would usually ( one sd ) be in a range ( X-140, X ).
All very approximate, but a general idea.
All very approximate, but a general idea.
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Re: FIDE rating differences between countries
And you do get anomalies like young Praggnanandhaa, who played at Rekjavik 2018 with a rating of 2507 (performance 2579) and in the rapidplay, his rating was 1736, with a 2597 performance... (The RP was Chess960, so wasn't rated as RP).
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Re: FIDE rating differences between countries
Yes, indeed. He got his initial rating when he was six years old and then played an average of five rated rapid games per annum. There isn't much you can do about that, other than chuck his rapid rating in the bin and use the real one.
This does bang on the head the idea that rapid events are not reported because of the cost. Rapid and Blitz events have always been rated by FIDE free of charge.
This does bang on the head the idea that rapid events are not reported because of the cost. Rapid and Blitz events have always been rated by FIDE free of charge.
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Re: FIDE rating differences between countries
I don't know anything much about rating, so I may be on completely the wrong track here (or raising something everybody else knows already about) but if today a lot of chess is played on the internet, and if therefore a lot of improvement is made by playing in that medium, would that have a distorting effect, because improvement that would previously have been made in rated chess is (to some degree) no longer properly tracked by those ratings?
"Do you play chess?"
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"Yes, but I prefer a game with a better chance of cheating."
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Re: FIDE rating differences between countries
Absolutely. As OTB chess returns ( as it will in most countries ) huge discrepancies will probably be revealed. It is not out of the question that some radical correcting mechanism will have to be considered, but for now there is not enough data to give that sensible thought.
edit : One side effect is that some players who have shown extreme levels of improvement during their absence from OTB play may well find themselves accused of cheating.
edit : One side effect is that some players who have shown extreme levels of improvement during their absence from OTB play may well find themselves accused of cheating.
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Re: FIDE rating differences between countries
... and some of them probably will be.NickFaulks wrote: ↑Tue Jun 15, 2021 11:18 amedit : One side effect is that some players who have shown extreme levels of improvement during their absence from OTB play may well find themselves accused of cheating.
One of my fears is that players who have developed methods of cheating online will transfer their new skills to OTB as that restarts.
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Re: FIDE rating differences between countries
With regard to charges for FIDE-rating Rapid and Blitz: FIDE does not charge but federations can and do. NZL is currently discussing charges (something which I as President of a club which just decided to FIDE-rate everything am not happy about!)
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Re: FIDE rating differences between countries
No, that's not true. All of the FIDE rated blitz tournaments I've organized have incurred zero rating costs because FIDE doesn't charge for rating blitz and the ECF don't grade them and so can't charge for what they don't do. It's a cheap way of getting new players into rated games for free (or very little) because ECF is also not required.Alex McFarlane wrote: ↑Sat Jun 12, 2021 7:29 amFor Swiss events the FIDE cost of rating is €1 per player per event.
FIDE also don't charge for rating rapid so for those tournaments the only cost is ECF silver membership as the ECF do grade rapid. Can you have a rapid tournament in England which is FIDE rated but not ECF graded? Or are such thoughts not permitted?
Last edited by Brian Towers on Sat Jul 03, 2021 11:16 pm, edited 1 time in total.
Ah, but I was so much older then. I'm younger than that now.
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Re: FIDE rating differences between countries
It's true in the discussion it was posted in on page 1 which was about standard play tournaments.Brian Towers wrote: ↑Sat Jul 03, 2021 9:20 pmNo, that's not true. All of the FIDFE rated blitz tournaments I've organized have incurred zero rating costs because FIDE doesn't charge for rating blitz and the ECF don't grade them and so can't charge for what they don't do. It's a cheap way of getting new players into rated games for free (or very little) because ECF is also not required.Alex McFarlane wrote: ↑Sat Jun 12, 2021 7:29 amFor Swiss events the FIDE cost of rating is €1 per player per event.
FIDE also don't charge for rating rapid so for those tournaments the only cost is ECF silver membership as the ECF do grade rapid. Can you have a rapid tournament in England which is FIDE rated but not ECF graded? Or are such thoughts not permitted?