I built an uci compatible chess engine, and I would like to know its Elo rating. What is the easiest way to get it?

I would like something that works both on Linux and Windows.

4 Answers 4


Easy question. Announce your engine on the chess programming forum (http://talkchess.com/forum/index.php). There'll be engine testers adding your engine to their rating list, such as CCRL. But please and please provide a working compiled binary.

Announce your engine, upload a compiled binary to somewhere like Dropbox. You'll hear feedback.


cutechess is a popular tool for automating computer engine-to-engine matches. The only and only way to test your changes is to make your engine to play games. You can make it to play with an older version or another engine.


  • cutechess is great! Do you where I can download other chess engine so I can play against them?
    – Romain
    Commented Jun 21, 2015 at 15:49
  • 1
    computerchess.org.uk/ccrl/4040 Click on the engines that you like. You might see a homepage included. If not, google the engine name.
    – SmallChess
    Commented Jun 21, 2015 at 15:50

Lichess.org has a bot API and allows bot accounts to play rated games against human players.

See this article.


The best is to use Bayselo. This command line utility, although rustic, allows you to determine, with sufficient data, the Elo ranking of a player, human or engine. Plus it's free. Use requires a certain investment because you have to play the engine whose Elo you want to test against other engines whose Elo is known. And you need at least a hundred games to have an estimate that means something. I wrote a procedure about this on my site. You will find it here: http://echecs-et-informatique.franceserv.com/bayeselo.html

  • It's in French. Use Google Chrome with Instant Translator. Commented Apr 15 at 10:39

Test it at


This is a scientific test based on problem solving and statistical computation.

  • 2
    This is an interesting site, but not suited for testing a chess engine's playing strength. Commented Nov 12, 2015 at 8:27

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