Chess.com Opponent Risk Score

About

This extension helps you avoid playing cheaters (or those who seem suspicious). 

Right when the game starts, the extension pops up and shows you a risk score - the probability of your opponent being a cheater from 0 to 100, where 100 means that they're (almost) certainly a cheater. 

If the score is high or critical, you might want to abort the game before you start playing. 

The calculation is based on a primitive scoring model which considers 4 factors: 
- Overall win rate for each format
- Recent win rate for each format (15-45 days) 
- % of High Accuracy games played recently*
- Account age** 

These factors are combined, checked and weighted against each other, which results in the final risk score. 

On the options page, you can choose: 
- If you the risk score calculated based on all or only rated games
- If you want to disable auto-pop-up behaviour. 
Note that this is recommended if you're running Chrome Version 126 or older. 

Please note that chess.com is not the fastest website out there. 
So sometimes the extension needs 5-10 seconds to load all the info. Just be patient!

The extension source code, as well as the risk model description is available here: 
https://github.com/tim-sha256/chess.com-anti-cheat

*  High accuracy is considered 80%+ for rating in [0; 1500], and 90%+ for 1500+. 
** Accounts younger than 60 days are considered more risky, and the overall score for them is multiplied by 1,5.