|Devel Chess Engine|
Download the newest version Devel 2.0000 (released March 2018).
Its playing strength is ~ ELO 2725, see CCRL 40/40 (40 moves in 40 minutes) or
CCRL 40/4 (40 moves in 4 minutes).
You may also download the older version Devel 1.8090 (released September 2017). Its playing strength is ~ ELO 2700.
I am grateful to Graham Banks and Sergio Martinez at CCRL for taking the time to test Devel!
The static evaluation function resembles that of classical Chess 4.5, the ancestor of all modern chess programs. This old program was described in detail by David J. Slate and Lawrence R. Atkin: Chess 4.5-The Northwestern University chess program in the book "Chess Skill in Man and Machine", by Peter W. Frey (ed.), Springer-Verlag, 1983.
The source code of the following programs I found very useful:
In Devel, evaluation of king safety is quite similar to that of Fruit (and Stockfish) and evaluation of passed pawns is nearly the same as in Stockfish.
Last update: 29 November 2019