Does our wonderful Cc really do this...

Someone, somewhere on these forums said Cc WANTS to keep players at a 50% win rate. I know they (the algorithm I presume) does a good job matching players up by rating, but how/why would they literally keep a player at a 50% win rate?

Thanks,

Just some guy...wanting to know the truth...😉

That's not accurate. However, a player that isn't improving, has a sufficient number of games, and a stable rating, is going to tend to have close to an even win/loss rate, that will tend to be close to 50%. Draws can skew that some. In some cases, it could be closer to 55/45 or somewhere along that range

That's especially true in live game pools and random opponents.

I am not sure what is inaccurate? Your response seems ambiguous..at best.

Draws can do what? I didn't thing a draw would change rating at all?

It's definitely possible that it would happen, but someone improving constantly would have a higher rate, and likewise a tilting player gets a lower win rate. A 50-0-50 is impossible because people often win or lose much more (like 47-53 or so) but draws also add about 2-6% of that. It will try to be unbalanced even if you don't draw, but you can not get a perfect 48-4-48 unless you tried doing that, but then your rating wouldn't change and you can't realistically win enough, even if you balanced yourself with a resign every time you get to 49-4-47.

The matchmaker can try its hardest to give you 48-4-48 (or a similar balanced wins - (draw) - loss ratio) but it cannot choose who looses every game, it can only predict - and that is how the elo changes - by predictions, so, if it tried its hardest to make you 48-4-48, it will only be able to do that if it has perfect predictions and if you cooperate to some extent.

You can easily get 48-4-48 but that matchmaker cannot by its own power accomplish that with the info it has (elo & game history)

The statement that chess.com wants to keep players at 50% is inaccurate. The rating system itself, if playing in the random pools, is going to tend towards that for players of stable strength/rating.

There can be some variance of course.

Draws can skew the percentages some what.

Thank You Mr. Stahl