chess points

       ess.com uses the "Glicko" rating system to calculate a players rating after each game played. Im not familiar with the exact formula. It goes like this. Its the relationship  between the two players' rating.  If you defeat a player whose rating is higher than  yours you gain more points than if you beat a player closer to your rating. I suggest you Google Glicko  chess rating system for a more complete explanation. BTW, the length of o game does not influence the points awarded, or lost.   Good Luck...Aglitatta

This question has been asked frequently on the forums.

The exact answer is somewhat complicated and it (see the Glicko System for chess.com) is here:

https://www.chess.com/article/view/chess-ratings---how-they-work

The simplest answer is that you are given an average rating to start and if you:

win against:

a player rated much higher than you, your rating goes up a lot.

a player rated about the same as you, your rating goes up a significant amount.

a player rated much lower than you, your rating goes up very little.

lose against:

a player rated much lower than you, your rating goes down a lot.

a player rated about the same as you, your rating goes down a significant amount.

a player rated much higher than you, your rating goes down very little.

draw against:

a player rated much higher than you, your rating goes up a significant amount.

a player rated slightly higher than you, your rating goes up very little.

a player rated the same as you, your rating doesn't change.

a player rated slightly lower than you, your rating goes down a little.

a player rated much lower than you, your rating goes down a significant amount.