English Chess Forum

Posted: **Sat Aug 01, 2020 8:37 am**

I was looking at one of my son's opponent, as I expected him to reach about 2050, but for some reason, his Fide page shows him having a K of 33.
https://ratings.fide.com/calculations.p ... 1&rating=0

The FIDE calculator states:

K = 40 for a player new to the rating list until he has completed events with at least 30 games
K = 20 as long as a player's rating remains under 2400.
K = 10 once a player's published rating has reached 2400 and remains at that level subsequently, even if the rating drops below 2400.
K = 40 for all players until their 18th birthday, as long as their rating remains under 2300.

K = 20 for RAPID and BLITZ ratings all players.

So what is happening here?

Posted: **Sat Aug 01, 2020 9:11 am**

Wadih,
If the number of games multiplied by the K factor exceeds 700 in a period then the k factor is modified down. You can research this further if you want to find out more.

Posted: **Sat Aug 01, 2020 9:15 am**

But also:-

If the number of games (n) for a player on any list for a rating period multiplied by K (as defined above) exceeds 700, then K shall be the largest whole number such that K x n does not exceed 700.

His opponent must have had enough games to exceed 700 (21 games in the month)

Posted: **Sat Aug 01, 2020 9:31 am**

Thank you both!

Posted: **Sat Aug 01, 2020 10:12 am**

Wadih Khoury wrote: ↑
Sat Aug 01, 2020 9:31 am
Thank you both!

This is not the first time that the calculator has caused confusion. I have asked for it to be corrected but to be honest would be just as happy if it were removed.

English Chess Forum

K=33?

K=33?

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Re: K=33?