If you never wondered how the elo rating of chess players would have changed within a tournament if they all started at the same elo, you are normal.
Nevertheless, this project can make you visualize it, round by round, and allows you to change the K value to accentuate the differences
You can use docker such as
docker build -t elovisu .
docker run -it --rm -p 8080:80 --name EloVisu elovisuor you may use yarn
yarn install
yarn serve
yarn build