Chess Olympiad: Understanding the Elo system that's used to rate

Not just chess but in some zero-sum games (a principle in game theory where a player's winnings is directly balanced out by the losses of their opponent) Elo rating is considered as the gold standard.

What is the relation between ELO rating and chess 24 rating? - Quora

Team Chess Analytics: Chess 'Moneyball

God's chess rating – uncle jerry's invention emporium

Student perspectives: The Elo Rating System – From Chess to

ELO ratings: Variations in time - Woochess-Let's chess

Statistical Analysis of the Elo Rating System in Chess

Current average chess rating - Chess Forums

Elo Meter - The test that calculates your Elo

Elo and Glicko Standardised Rating Systems – TOM ROCKS MATHS