New engine releases 2019

[Norbert Raimund Leisner]

Demolito 2019-04-27 https://ci.appveyor.com/project/lucasar ... /artifacts (last version number
of CCWiki Chess Engine List is from 2018/10/29) > 2018/11/08 Thank you Graham for this information!

[Guenther]

Demolito 2019-04-27 https://ci.appveyor.com/project/lucasar ... /artifacts (last version number
of CCWiki Chess Engine List is from 2018/10/29) > 2018/11/08 Thank you Graham for this information!

Not quite true. Last version via appveyor is from 2019-05-05.
https://ci.appveyor.com/project/lucasar ... s/24314077

(just always go to https://ci.appveyor.com/project/lucasar ... to/history and latest one or to 'current build' => artefacts)

[Guenther]

Knightx 1.94 available since end of May
http://technochess.free.fr/

Rhetoric website not reachable, wayback available, but no download versions saved
https://web.archive.org/web/20181228014 ... toric.com/
https://web.archive.org/web/*/http://chessrhetoric.com*

oops, already reported by me.
new download for the latest version 1.43 here:
http://kirill-kryukov.com/chess/discuss ... p?id=41835

Nebiyu 1.5 released end of May
https://sites.google.com/site/dshawul/n ... ects=0&d=1

[joechess]

How do i get nebiyu checkers working in Winboard Alien?

[flok]

Micah v0.1: https://vanheusden.com/Micah/

[voffka]

Igel 1.7.0 at https://github.com/vshcherbyna/igel/releases/tag/1.7.0 (binaries for Linux and Windows)

What's new:

- Avoid LMR for moves that make pawn pushes to 5th and 6th ranks
- Apply LMR at shallow depths
- Implement counter move, follow up move and history move pruning
- Implement probcut
- Avoid prunning in IID path
- Enable LMR during endgames
- Do not spend time evaluating forced moves, simply return an evasion move as soon as possible

Strength improvements over 1.6.0 in CCRL 40/4 time control:

Code: Select all

Score of Igel 1.7.0 64 POPCNT vs Igel 1.6.0 64 POPCNT: 178 - 105 - 295 [0.563] 578
Elo difference: 44.12 +/- 19.80

Relative strength compared to division 5 engines in CCRL 40/4 time control:

Code: Select all

Rank Name                          Elo     +/-   Games   Score   Draws
0 Igel 1.7.0 64 POPCNT           15      19     900   52.1%   29.3%
1 Arminius 2018-12-23            78      58     100   61.0%   30.0%
2 gogobello 2.0                  10      59     100   51.5%   25.0%
3 RuyDos 1.1.9                    7      57     100   51.0%   30.0%
4 Cheese 2.0 64 bits              0      57     100   50.0%   32.0%
5 Devel 2.0000                  -24      55     100   46.5%   35.0%
6 Topple 0.5.0                  -24      60     100   46.5%   25.0%
7 GreKo 2018.08                 -31      55	100   45.5%   37.0%
8 Shield 2.1                    -35      58     100   45.0%   30.0%
9 Fridolin 3.10                -115      64     100   34.0%   20.0%

Relative strength compared to Cheng 4.39 in CCRL 40/4 time control:

Code: Select all

Score of Igel 1.7.0 64 POPCNT vs Cheng 4.39: 107 - 505 - 258  [0.271] 870
Elo difference: -171.67 +/- 20.53

The previous score of Igel 1.6.0 against Cheng 4.39 is much lower in CCRL 40/4 time control:

Code: Select all

Score of Igel 1.6.0 64 POPCNT vs Cheng 4.39: 40 - 343 - 117  [0.197] 500
Elo difference: -244.10 +/- 30.51

[flok]

Micah v0.1: https://vanheusden.com/Micah/

Micah v0.3: https://vanheusden.com/Micah/files/Micah-0.3-win64.zip

Changes: fix in qs that made it a bit stronger.

According to my own testing:

Code: Select all

Rank Name                   Elo    +    - games score oppo. draws                                                             
   3 Micah-8b652b1e        2152   15   15  1911   74%  1960   18% 

[xr_a_y]

Igel 1.7.0 at https://github.com/vshcherbyna/igel/releases/tag/1.7.0 (binaries for Linux and Windows)

What's new:

- Avoid LMR for moves that make pawn pushes to 5th and 6th ranks
- Apply LMR at shallow depths
- Implement counter move, follow up move and history move pruning
- Implement probcut
- Avoid prunning in IID path
- Enable LMR during endgames
- Do not spend time evaluating forced moves, simply return an evasion move as soon as possible

Strength improvements over 1.6.0 in CCRL 40/4 time control:

Code: Select all

Score of Igel 1.7.0 64 POPCNT vs Igel 1.6.0 64 POPCNT: 178 - 105 - 295 [0.563] 578
Elo difference: 44.12 +/- 19.80

Relative strength compared to division 5 engines in CCRL 40/4 time control:

Code: Select all

Rank Name                          Elo     +/-   Games   Score   Draws
0 Igel 1.7.0 64 POPCNT           15      19     900   52.1%   29.3%
1 Arminius 2018-12-23            78      58     100   61.0%   30.0%
2 gogobello 2.0                  10      59     100   51.5%   25.0%
3 RuyDos 1.1.9                    7      57     100   51.0%   30.0%
4 Cheese 2.0 64 bits              0      57     100   50.0%   32.0%
5 Devel 2.0000                  -24      55     100   46.5%   35.0%
6 Topple 0.5.0                  -24      60     100   46.5%   25.0%
7 GreKo 2018.08                 -31      55	100   45.5%   37.0%
8 Shield 2.1                    -35      58     100   45.0%   30.0%
9 Fridolin 3.10                -115      64     100   34.0%   20.0%

Relative strength compared to Cheng 4.39 in CCRL 40/4 time control:

Code: Select all

Score of Igel 1.7.0 64 POPCNT vs Cheng 4.39: 107 - 505 - 258  [0.271] 870
Elo difference: -171.67 +/- 20.53

The previous score of Igel 1.6.0 against Cheng 4.39 is much lower in CCRL 40/4 time control:

Code: Select all

Score of Igel 1.6.0 64 POPCNT vs Cheng 4.39: 40 - 343 - 117  [0.197] 500
Elo difference: -244.10 +/- 30.51

Eh,

I have a little issue with Igel. Althought Igel is saying

Code: Select all

Igel 1.7.0 by V. Medvedev, V. Shcherbyna
uci
id name Igel 1.7.0 64 POPCNT
id author V. Medvedev, V. Shcherbyna
option name Hash type spin default 128 min 1 max 131072
option name Threads type spin default 1 min 1 max 128
option name SyzygyPath type string default <empty>
option name SyzygyProbeDepth type spin default 1 min 1 max 128
uciok

cutechess is printing

Code: Select all

Warning: igel doesn't have option Hash
Warning: igel doesn't have option SyzygyPath
Warning: igel doesn't have option SyzygyProbeDepth
Warning: igel doesn't have option Threads

What can I do ?

[voffka]

Salut Vivien,

cutechess is printing

Code: Select all

Warning: igel doesn't have option Hash
Warning: igel doesn't have option SyzygyPath
Warning: igel doesn't have option SyzygyProbeDepth
Warning: igel doesn't have option Threads

What can I do ?

Which version of cutechess? I tried cutechess 1.0.0 (it uses Qt 5.9.1) in Windows and it can properly detect the options. Are you running it in linux? Which distro, and which version of cutechess?

[xr_a_y]

Salut Vivien,

cutechess is printing

Code: Select all

Warning: igel doesn't have option Hash
Warning: igel doesn't have option SyzygyPath
Warning: igel doesn't have option SyzygyProbeDepth
Warning: igel doesn't have option Threads

What can I do ?

Which version of cutechess? I tried cutechess 1.0.0 (it uses Qt 5.9.1) in Windows and it can properly detect the options. Are you running it in linux? Which distro, and which version of cutechess?

This is cutechess-cli 1.1.0 under ubuntu 19.04.