Since you’re here...

... we have a small favour to ask. More people, like you, are reading and supporting our blog: "Chess Engines Diary". And unlike many other sites and blogs, we made the choice to keep our articles open for all, regardless of where they live or what they can afford to pay.

We hope you will consider supporting us today. We need your support to continue to exist, because good entries are more and more work time. Every reader contribution, however big or small, is so valuable. Support "Chess Engines Diary" even a small amount– and it only takes a minute. Thank you.

============================== My email: jotes@go2.pl



Chess engine: Drofa 3.2 (Windows and Linux)

 


DrofaUCI chess engine (written in C++11), AuthorAlexander Litov.
Rating JCER=3137
Drofa started as fork of the Shallow Blue chess engine. 

v.3.2:
Since the last release Drofa got ~100 self-play elo.

The most important changes:
Rewrite of history bonuses (now they are capped, plus other tweaks)
Added capture history
Added countermove history
Added late capture extension
Scale evaluation based on winning side pawn count
Adjust some of the extensions if null move failed
Scale evaluation for OCB + Rook / Knight endgames
Some evaluation tweaks / a couple of new eval terms
Much more agressive LMP, LMR and SEE
Retuned evaluation with Drofa data


Comments

Popular Posts