Search found 66 matches
- Fri Dec 07, 2018 3:38 pm
- Forum: ECF Matters
- Topic: ECF to scrap its grading system
- Replies: 267
- Views: 12626
Re: ECF to scrap its grading system
Also what do the grading team consider a more suitable grading system to be?
- Fri Dec 07, 2018 2:13 pm
- Forum: ECF Matters
- Topic: ECF to scrap its grading system
- Replies: 267
- Views: 12626
Re: ECF to scrap its grading system
"The present method of calculating grades was devised to handle batch processing of results, with each batch containing a significant number of results for each active player. This method of calculation is statistically unsound once the frequency of calculation is such that the number of results in ...
- Sat Mar 10, 2018 11:41 am
- Forum: 4NCL
- Topic: Div 3 North 2017 - 18
- Replies: 86
- Views: 13915
Re: Div 3 North 2017 - 18
If it was a normal Swiss now wouldn't Gonzaga be playing 3Cs 2? (I am not complaining - Shropshire 1 would have almost certainly had to play Gonzaga in one of the remaining rounds.) All I will say is that it is just as well that no-one is in contention for a norm because I don't see how anyone could...
- Thu Feb 15, 2018 3:46 pm
- Forum: 4NCL
- Topic: Div 3 North 2017 - 18
- Replies: 86
- Views: 13915
Re: Div 3 North 2017 - 18
Looks like a 4 team race for the 2 promotion spots I wonder if we will see Gonzaga v Shrops 1 and Bradford A at weekend 4, with 3Cs 2 playing both too, leaving Gonzaga v 3Cs 2 to the final weekend I have tried and failed to predict the pairings so far but I'll have another go. I don't think we will...
- Thu Jan 11, 2018 12:39 pm
- Forum: General Chat
- Topic: How to test one's chess level?
- Replies: 4
- Views: 953
Re: How to test one's chess level?
When I was a junior in Scotland attending a SJCA training event the late Danny Kopec assessed the strength of a group of us by seeing how many tactical puzzles we could correctly solve. There are plenty of books out there which use this approach. (What one knows about chess is not necessarily the sa...
- Mon Nov 06, 2017 3:24 pm
- Forum: 4NCL
- Topic: Div 3 North 2017 - 18
- Replies: 86
- Views: 13915
Re: Div 3 North 2017 - 18
So which teams are in which groups for the purposes of the pairing system?
- Thu Aug 27, 2015 11:26 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
@ Christopher Kreuzer
I have sent you a pm.
I have sent you a pm.
- Wed Aug 26, 2015 11:32 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
Why not? Isn't it obvious? If one of them wins, the loser gets pairings against players who have faired less well, thus easier. If they draw, both get easier pairings than their opposition. A Swiss system is a hybrid between an all play all and a knockout. That might be a fair point for your averag...
- Wed Aug 26, 2015 11:23 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
Having thought about it, personally I would have stuck with the old grade and allocated the ranking order randomly instead of disclosing the 3 digit numbers, particularly for a tournament with the number of rounds that the British Championship has. You would accept a pairing of the number 1 seed wi...
- Wed Aug 26, 2015 11:07 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
Having thought about it, personally I would have stuck with the old grade and allocated the ranking order randomly instead of disclosing the 3 digit numbers, particularly for a tournament with the number of rounds that the British Championship has. You would accept a pairing of the number 1 seed wi...
- Wed Aug 26, 2015 10:49 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
The old Clarke system would only require 8 digits at the present time because of the way you, or the person you are following, has chosen to extend the system. Clarke choose the numbering system. Raaphi Persitz is the only player I remember around 1958 to be graded in 1aa. His grade may have been a...
- Wed Aug 26, 2015 10:45 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
I would have thought that having fewer distinct grades and multiple players with the same grade would increase the number of possible pairings. Given the possibility of arbiter bias it is considered important that one and only one set of pairings is possible. The practical methods of doing this rev...
- Tue Aug 25, 2015 2:32 pm
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
@ Roger de Coverly
Thanks for the background information.
Thanks for the background information.
- Tue Aug 25, 2015 11:49 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
@ E Michael White Agreement with Elo also has its drawbacks. (I understand there was an online competition to see who could come up with the best system for predicting results from grades and it was won by a modified Glicko system. I don't have time however to look it up at the moment.) The old Clar...
- Tue Aug 25, 2015 11:44 am
- Forum: Grading Debate
- Topic: ECF Director wants to scrap Clarke grading system
- Replies: 95
- Views: 10933
Re: ECF Director wants to scrap Clarke grading system
@ Roger de Coverly I don't see the problem myself. Depending how confident you want to be someone may have to have a three digit grade 16 points higher than someone else before you can definitely say that they are a better player. I suspect players who had grades under the system appreciated that, t...