ending games’ ratings

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Avatar of Yehia123123123
What decides the ratings at the end of a game (I mean on what basis does the rating become +8, or +7, or +18 for the winner, and the negative numbers for the losers)?
Avatar of Martin_Stahl
Yehia123123123 wrote:
What decides the ratings at the end of a game (I mean on what basis does the rating become +8, or +7, or +18 for the winner, and the negative numbers for the losers)?

It depends on each player's rating and respective rating deviation.

https://support.chess.com/en/articles/8566476-how-do-ratings-work-on-chess-com