#### Help Forum

1. 02 Feb '06 14:52
Does it matter what rating your opponent has when you win / lose?
I saw a guy with over 5500 matches won, and lost about 1200 games .. but he is only rating 1200 .... ??

How does the rating system work?
2. 02 Feb '06 14:58
Originally posted by WOScorpion
Does it matter what rating your opponent has when you win / lose?
I saw a guy with over 5500 matches won, and lost about 1200 games .. but he is only rating 1200 .... ??

How does the rating system work?
Say you have same number of wins as number of losses.
Then compare the two situations:
(1) He always plays with stronger players. Then his rating will increase.
(2) He always plays with weaker players. Then his rating will decrease.
This will tell that it is not only the number of wins and losses that counts alone. It is also the strength of the opponents.

I suppose the guy you mentioned only plays with weaker players - and that explains the low rating.
3.  Ragnorak
02 Feb '06 15:55
Originally posted by WOScorpion
Does it matter what rating your opponent has when you win / lose?
I saw a guy with over 5500 matches won, and lost about 1200 games .. but he is only rating 1200 .... ??

How does the rating system work?

D
4. 02 Feb '06 16:23
Originally posted by Ragnorak

D
I did, but if I read this I get confused. Formulas.
Just wanted a easy explenation .......

Players are rated using the following formula:

New Rating = Old Rating + K * (Score - Win Expectancy)

K is a constant (32 for 0-2099, 24 for 2100-2399, 16 for 2400 and above)

Score is 1 for a win, 0.5 for a draw and 0 for a loss.

The Win Expectancy is calculated using the following formula :

Win Expectancy = 1 / (10^((OpponentRating-YourRating)/400)+1)

The Win Expectancy is used in the rating calculation but is interesting on its own. For example, the calculation below is for a rating difference of 200. This shows that if you have a rating 200 points higher than another player, you can expect to beat them, on average, three times for each four games played.

Win Expectancy = 1 / (10^(-200/400)+1) = 0.76

Note: ^ = "to the power of", e.g. 2^3=8.
5. 02 Feb '06 16:24
My eyes are still spinning from that rating forumula thing ðŸ˜€
6.  Ragnorak
02 Feb '06 16:33
Originally posted by WOScorpion
My eyes are still spinning from that rating forumula thing ðŸ˜€
This might help you out. I've just spent 10 minutes looking for it, so you better appreciate it. ðŸ˜‰

D
7. 02 Feb '06 18:56 / 1 edit
Originally posted by Ragnorak
This might help you out. I've just spent 10 minutes looking for it, so you better appreciate it. ðŸ˜‰

D
Weeee, Thx for you 10 min. time.
THAT I understand.

THANK YOU VERY MUCH

(if I knew how to vote for ya I did)

WOScorpion (932)
meumeu (1051)

1051 - 932 = 119

125-21-10
So if I would win this I get about 21 points, if meumeu wins he gets about 10 (give or take a point np)

Cool