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by Roger de Coverly
Wed Aug 12, 2009 4:08 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

michele clack wrote:Does anyone know what Nigel Short was graded at at 13 and at what age he became a grandmaster?
According to the November 1979 BCM he was 215 for 1979 (age 13 in ECF rules) up from 206 in 1978.

According to wiki, he became a grandmaster at the age of 19 -- but it was more difficult then !
by Roger de Coverly
Wed Aug 12, 2009 3:28 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

Come the new grading system one is graded 156 and the other two are both graded 73 . Yet nothing dramatic has happened to their playing ability. It is just that one won most of his matches this season and the others didn't. I now think this (and other junior anomalies) may be the same issue as the ...
by Roger de Coverly
Wed Aug 12, 2009 2:48 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

ndeed, they said that instead of someone graded 190 having a 60-40 chance against someone graded 180, it was 57-43 instead. As a result, the system was changed. What exactly was wrong with it not being 60-40? Various statements were made with little (in my opinion) convincing backup as to exactly h...
by Roger de Coverly
Wed Aug 12, 2009 2:33 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

an estimate will be calculated based on repeated iterations, with the iterations stopping when it is determined that "the figures [have] (more or less) stop changing". I know I'm not the first to say it but, by itself this surely won't work if a player scores highly or lowly. I think you are correc...
by Roger de Coverly
Wed Aug 12, 2009 2:17 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

Yet nothing dramatic has happened to their playing ability. It is just that one won most of his matches this season and the others didn't. It's been variously pointed out that grading systems use (known) results as an attempt to measure/estimate (unknown) playing strength. It's also been pointed ou...
by Roger de Coverly
Wed Aug 12, 2009 12:59 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

Please can we scrap the outdated and unreliable ECF grading system completely and move towards FIDE ratings for all players, regardless of age? Given that the current FIDE rating regulations impose a minimum playing session of three hours, so say nothing of the ECF's interpretation of FIDE rules to...
by Roger de Coverly
Wed Aug 12, 2009 8:51 am
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

The junior increment is there to prevent deflation that would be inherent if we had loads of under-rated juniors in the grading system. If you're not going to use their grades to calculate the grades of others then they're not in the grading system and you simply don't need the increment at all. In...
by Roger de Coverly
Wed Aug 12, 2009 12:14 am
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

If Yan-Fan for example plays an adult with say a grade of 100 and makes a blunder and loses does this mean he gets a grading performance of 50 as he is a new player ie no 40 point protection? Presumably only in the first iteration. His other games in the season will probably give him a grading perf...
by Roger de Coverly
Tue Aug 11, 2009 10:15 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

Some juniors do improve rapidly (I teach some of them at Wilsons). They play 30+ games a season. Those are the ones whose grades should be reset. I think there should be an upper grading bound on any resetting (and you might apply resets to "inexperienced" adults as well). It appears to be indicate...
by Roger de Coverly
Tue Aug 11, 2009 8:51 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

Jonathan Bryant wrote:

3) I don't remember what board I was on but I'm pretty sure it wasn't top board. (Does somebody know where to look this up?)
This is where I found it (google for London League Chess :D )

http://www.lcl.streamlinenettrial.co.uk/74.htm

So it was board 5.
by Roger de Coverly
Tue Aug 11, 2009 8:11 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

It should also be noted that juniors are now treated as ungraded players. . Could you run that past us again please? Are you telling us that we can no longer calculate our grading performance based on the published grading list? This applies even if we are playing a well established under 18 in the...
by Roger de Coverly
Tue Aug 11, 2009 8:02 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

I suppose what all the disputes boil down to is whether you think there *has* been grading deflation or not. Could you share with us your definition of deflation? From the perspective of the early 1970s when the top of the tree (Keene/Hartston/Penrose) were 230-240 and personally my grade was 179 i...
by Roger de Coverly
Tue Aug 11, 2009 6:00 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

It could even be a bit of both, which takes me back to the point that since we don't know exactly what's been done, we're all just speculating to a greater or lesser extent. According to http://grading.bcfservices.org.uk/newgrades.php 2007 and 2008 grades With the 2006 grades established, Standard ...
by Roger de Coverly
Tue Aug 11, 2009 5:09 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

've now discovered that my son claims the record for the biggest fall in grade by 51 points (from a 'Last year' grade of 124 to one of 73). As it's only 9 games, you might want to check who he played and the calculation for yourself. As a guess, perhaps, he lost the protection of the 40 point rule ...
by Roger de Coverly
Tue Aug 11, 2009 4:52 pm
Forum: Grading Debate
Topic: When is the new grading list coming out?
Replies: 509
Views: 36092

Re: When is the new grading list coming out?

Equally, I'm not convinced that a problem with 50 or so players' grades constitutes evidence that the whole system is flawed. I'm not so sure about that. Earlier Richard Bates commented that he thought the grades of the top players (except himself) had all gone up. Prompted by that, I isolated the ...