how do they score the ratings on a game of chess?

Answer 1

chung_fw already explained the basics, but if you want to dig in the details, take a look at the nice explanation on the wikipedia page:
http://en.wikipedia.org/wiki/ELO_chess_rating

Answer 2

The rating system is usually called the "ELO" system. Basically, you start out with a rating level set at an arbitrary level, say, 1200. Then, if you beat someone with a higher rating than you, you gain lots of points, but if you lose to someone with a higher rating than you, you don't lose that many points. On the other hand, if you win against someone with a lower rating, you wouldn't gain as many rating points. As you play more games, your rating will stabilize.

The rating system is a good way to make sure that the games you play are always against people that will be a good match for you.

Answer 3

It probable makes use of a version of changed ELO scoring. the difficulty-unfastened thought is that, once you play against somebody of a decrease score than you, you're "meant to" win (you're a extra perfect participant), so which you score fewer factors for a win yet extra factors for a loss. in case you start up enjoying against those with greater rankings, the opposite is genuine. this technique, in the long-term, grants an fairly good way of score great numbers of gamers.

Answer 4

you play several games, with different ranking people, and you ranking results on an average of wins and losses and your oponents ratings. The first who answered you question doesn't know what he is talking about. You can't really rate a single game.

Answer 5

they go by the epices you capture each one has its own scoring rank so if you clean the board then get checkmate you would get the best score possible