Real-World Skill Levels: ELO

[Infornific]

Originally Posted by johndallman

The Elo rating system is, indeed, the currently used rating system. It's calibrated in terms of win probabilities. A player rated 100 points above their opponent should win 64% of the time. The name is not an acronym and should not be capitalised.

Does anyone know the math for calculating odds of winning a quick contest? I would think a 1 point advantage would be more than 50% but less than 64%.