New engine releases 2019

[Gabor Szots]

Defenchess 2.1 https://github.com/cetincan0/Defenchess/releases

This version is clearly stronger than 2.0. Moreover, so far I have not detected any crashes with it.

[voffka]

Igel 1.8.3 at https://github.com/vshcherbyna/igel/releases/tag/1.8.3 (binaries for Raspberry Pi, Linux and Windows).

What's new:

- Drop into qsearch at depth <= 0 without checking for tt
- Avoid null move prunning if a tt hit has been discovered
- Fix the detection of a root position
- SEE margin improvements

Strength improvements over older versions:

Code: Select all

tc=all/10+0.1
Score of Igel 1.8.3 64 POPCNT vs Igel 1.8.2 64 POPCNT: 3145 - 1879 - 3220  [0.577] 8244
Elo difference: 53.78 +/- 5.87

Code: Select all

tc=40/96
Score of Igel 1.8.3 64 POPCNT vs Igel 1.8.2 64 POPCNT: 170 - 103 - 320 [0.556] 593
Elo difference: 39.42 +/- 18.94

[Guenther]

LC0 0.21.4 released yesterday
https://github.com/LeelaChessZero/lc0/releases

[Chessqueen]

LC0 0.21.4 released yesterday
https://github.com/LeelaChessZero/lc0/releases

Can a new section be added for new NN Engine releases , and one just for ab engines instead of mixing them up ?

[Damir]

Gothmog 0.43 and Gothmog 0.48(0.43 is less buggy than 0.48)

http://www.computer-chess.org/lib/ex...8.and.0.43.zip

[tmokonen]

Your link is a little messed up, Damir. Not exactly a new engine either, but nice to see the old versions available.

http://www.computer-chess.org/lib/exe/f ... d.0.43.zip

Sugar-NN 310719
https://github.com/Zerbinati/SugaR-NN/releases

Bagatur 1.8
https://github.com/bagaturchess/Bagatur ... ne.1.8.zip

[Damir]

sorry here is new link. I hope this one works.

http://www.computer-chess.org/lib/exe/f ... d.0.43.zip

[Norbert Raimund Leisner]

AcquaD 3.8.5 http://www.elektrosoft.it/scacchi/acquad/acquad.asp
Minic 0.82 https://github.com/tryingsomestuff/Minic/releases

[Guenther]

LC0 0.22.0 released
https://github.com/LeelaChessZero/lc0/releases

[fabianVDW]

Version 1.9.1 of FabChess https://github.com/fabianvdW/FabChess/r ... tag/v1.9.1



This version comes with a bugfix to timecontrol which sets default safety flag to 100ms. (When the time left <100ms, stop search and report move). This should hopefully prevent the crashes Version 1.9 has faced.
Timecontrol as a whole was retweaked a bit, so If anything seems off there, please let me know.

Version 1.9.1 does more uci reporting and also has some tweaked values in null move search and aspiration window. Also a bug in eval was fixed.

All in all this version is +20 Elo against Version 1.9 at 10s +0.1s games.

If there are any problems with the binaries (especially the NON-POPCNT ones), or if FabChess crashes again please let me know.

Fabi