Embla

"En gammel skole sjakk program"

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Embla

What is it?

A chess program (one that plays, not a chess board).

Play against it

You can play against it on FreeChess.org or by downloading it to your computer.

How it works

Run it from e.g. Arena or xboard/winboard with polyglot.

This page explains how to install Embla in Arena.

If you would like to play against Embla on a Mac, see this page.

Download

Please note: Embla is a UCI chess engine.
You can find ready-made packages for Debian and other Linux distributions in this location. It also contains a zip-file with a Microsoft_Windows 64 bit exe (compiled using Cygwin).

download

For opening book you can use any polyglot book file. E.g. the ones from rebel.

The source code can be retrieved from GitHub.

Version history

Version 1.0.0:

Version 0.9.9: stronger play, xboard protocol support

Version 0.9.7: stronger play

Version 0.9.6: couple of micro-optimalizations

Version 0.9.5: polyglot book support, strength improvement

Version 0.9.4.1: fix for segfault in cutechess

Version 0.9-0.9.4 improve play strength

Version 0.8 adds syzygy endgame database-support

Version 0.7.1 fixes the issues with pondering.

Version 0.5 is the first version winning a game against an other chess engine!

Rating

I pinned the rating of 0.9.6 to 2000 as that is the rating at FICS (2016/12/18).

"sts" is "strategic test squite" (100ms think time).

"wac" is "win at chess" - ran with 250ms think time.

"bratko/kopec" is "bratko kopec test" - ran with 250ms think time.

versionelostswacbratko/kopec
1.0.0
0.9.92245696524313
0.9.82227693223912
0.9.72090689022911
0.9.6200066392099
0.9.5191965261848
0.9.4.1176862781468
0.9.463081468
0.9.3165364661277
0.9.265451258
0.9.164811209