Search found 64 matches

by Ian Jamieson
Sat Mar 10, 2018 11:41 am
Forum: 4NCL
Topic: Div 3 North 2017 - 18
Replies: 86
Views: 12547

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...
by Ian Jamieson
Thu Feb 15, 2018 3:46 pm
Forum: 4NCL
Topic: Div 3 North 2017 - 18
Replies: 86
Views: 12547

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...
by Ian Jamieson
Thu Jan 11, 2018 12:39 pm
Forum: General Chat
Topic: How to test one's chess level?
Replies: 4
Views: 861

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...
by Ian Jamieson
Mon Nov 06, 2017 3:24 pm
Forum: 4NCL
Topic: Div 3 North 2017 - 18
Replies: 86
Views: 12547

Re: Div 3 North 2017 - 18

So which teams are in which groups for the purposes of the pairing system?
by Ian Jamieson
Thu Aug 27, 2015 11:26 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

Re: ECF Director wants to scrap Clarke grading system

@ Christopher Kreuzer

I have sent you a pm.
by Ian Jamieson
Wed Aug 26, 2015 11:32 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

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...
by Ian Jamieson
Wed Aug 26, 2015 11:23 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

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...
by Ian Jamieson
Wed Aug 26, 2015 11:07 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

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...
by Ian Jamieson
Wed Aug 26, 2015 10:49 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

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...
by Ian Jamieson
Wed Aug 26, 2015 10:45 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

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...
by Ian Jamieson
Tue Aug 25, 2015 2:32 pm
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

Re: ECF Director wants to scrap Clarke grading system

@ Roger de Coverly

Thanks for the background information.
by Ian Jamieson
Tue Aug 25, 2015 11:49 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

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...
by Ian Jamieson
Tue Aug 25, 2015 11:44 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

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...
by Ian Jamieson
Tue Aug 25, 2015 11:34 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

Re: ECF Director wants to scrap Clarke grading system

@ Christopher Kreuzer I used to have a couple of old BCF yearbooks from the 1960s (?) I understand that the BCF published grades for 1A to 3B as follows:- 1A 241 - 248 1B 233 - 240 2A 225 - 232 2B 217 - 224 3A 209 - 216 3B 201 - 208 N.B. For the avoidance of any doubt they published the 1A etc. not ...
by Ian Jamieson
Thu Aug 20, 2015 11:16 am
Forum: Grading Debate
Topic: ECF Director wants to scrap Clarke grading system
Replies: 95
Views: 9982

Re: ECF Director wants to scrap Clarke grading system

I haven't read all of this thread - I haven't got the time - but if it was up to me I would go back to the old system of 1A,1B,2A etc. People attach far too much significance to grades and think they are far more accurate than they actually are. I agree with Stewart Reuben for once that the extra di...