Sunday, 17 May 2020

Kenilworth online chess ratings (April 2020)

Following a suggestion from our supreme leader (and from a leader so supreme as he is, who could doubt that a refusal to follow such a "suggestion" would end anyway other than in a trip to the Kenilworth Municipal Gulag), I officially present the first monthly Kenilworth online chess ratings. We can all feel proud we've managed to get there before the ECF has succeeded in moving to monthly grading.

A bit of methodology to begin with. We are using the same ELO system as used for FIDE ratings but, in order to shake up the rankings a bit, I've decided that each month we will start again from scratch, rather than carrying forward ratings and updating them. Thus, the below is based on data from all rated games of chess played between Thursday night visiting club members up until the end of April 2020. The May ratings will then only be based on games played in May and so on. The fact I played atrociously in April and thus benefit from a clean slate in May should not be regarded as having played any part in this decision making process.

Anyway, enough rambling, and on to the results. There will be three awards presented this month, and I'm open to suggestions of other ones to add in the future.

Most active player (most games played with other club members)
This would normally be termed the Bernard Rogers award. However, Bernard's slight technological incompetence, resulting in him playing a decent number of games that weren't rated, means he was piped to the post by Jude, who wins this award with a total of 84 inter-club games.

Most points scored (against other club members)
He wasn't the most active member, nor was he in the top three for highest win percentages, but plodding slowly down the middle (also probably an accurate description of his horse's race skill) to victory in this category was Mark, with 43.5 points scored against other club members (just 1 point ahead of Jude, thus denying him a double victory).

Overall ratings

And finally, the main, with the rankings based on this section of games coming out as:

Paul Lam
Andy Baruch
Mark Page
Ben Graff (provisional rating as less than 10 games played)
Lionel Riou-Durand
Jude Shearsby
Joshua Pink
Bernard Rogers
Algirdas Toleikis
Bernard Charnley
Matthew Smiglarski

I have withheld the actual ratings, both to create a degree of suspense, but also because since it is a closed system with players only playing against each other, whilst it is easy to calculate ratings relative to one another, you can't calculate absolute ratings unless you arbitrarily fix someone's rating at a particular value. I am of course happy to answer any questions there may be about this on Thursday, with sample acceptable questions being:

1) How many rating points different am I from person X?
2) Why is it that ratings are more stable when a logistic rather than a Gaussian distribution is used for expected scores?
3) Why are you so generally fantastic?

Look out for the next set of ratings at the end of May, but I can already predict three key changes. The entry of a certain Philip Wood into the list, a rise for me since so far this month I haven't lost essentially every game I've played to Jude, which is an improvement, and a fall down the list for Andy, who based on the last couple of weeks seems to have entirely forgotten how to play chess.

No comments:

Post a comment