However, there is a fork off of fire 2.2, which has been rename Firenzina, which is still open-sourced. It originally started out as an open-source project, but later the code became closed. It's debatable whether Fire or Andscacs is the better engine since they are within 10 points difference in the CCRL rating list. Originally called Firebird, this chess engine is usually among the top 10 in many rating lists. It is licensed under GPLv3, which basically means you can share to anybody, sell it as part of a larger project, and change the source code, as long as you either point back to where you got it, or supply the original source code.įire is another one of the top free chess engines. It must be noted that although these four are the main developers, this engine is open-sourced and thus was developed by a whole community of people. The main co-authors of this engine are Tord Romstad, Marco Costalba, Joona Kiiski, and Gary Linscott. It is also about 40 points above the next best chess engine! Although computer rating lists and official rating lists don’t necessarily match up, it is easy to say that Stockfish 7 is well beyond the skill of any grandmaster. Stockfish 7, the latest version as of this moment of writing, has a rating of 3339. Stockfish is the strongest free chess engine. I've used the list with 40 minutes per 40 moves time control While the site's ratings don't match up with FIDE's ratings, it is within the ballpark. As I said, this site tests chess engines, and gives them a rating according to how well they do.

Houdini 6 chess engine download