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Showing posts from January, 2016

Jurek Chess Engines Rating 01-02-2016

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Crafty 25 wins 3 League edition 02/2016 (JCER chess engines league), 2016.01.26 - 2016.01.31

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Congratulations to Robert Hyatt!

Promote to 2 League Crafty 25andMurka
Demoted to 4 League Laser 1.0 and Cheese

480 games download  Temp: 3' + 3"
Hardware: Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB system: Windows 8.1 64 bit  GUI-Arena 3.5.1Book: Perfect 2015Table created:Scid vs PC


Fizbo 1.6 UCI chess engine. New version

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Fizbo - UCI chess engine

Fizbo - homepage


JCER=2786

Author - Youri Matiounine



Fizbo 1.6 download





The Tarrasch Chess GUI - new version: Tarrasch V3 Alpha 2015.12.23-a

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Tarrasch is an extremely easy to use free chess program for Windows.

Tarrasch comes with free chess engines, so you get everything you need to enjoy computer chess with one simple free download.

Tarrasch is designed to to make it as easy as possible to perform some basic chess activities; Play a game against a chess engine, with either color, from any position, with a time handicap if desired.
Setup an arbitrary position and get the engine to analyse that position. View and play through the analysis provided by the engine.
Create and edit .pgn files (standard chess documents). Enter variations easily (just make moves anywhere). Enter and edit comments easily (just click anywhere and start typing). Promote and demote variations and even comments (so comments can change to moves and vice-versa – great for picking text off a website)..

Tarrasch Chess GUI download


Chess engine: Stockfish BC 290116

Shark 160124 (Stockfish clone)

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Orka 160124 (Stockfish clone) - new version

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Chess Engines Prehistory - League 16-23.11.2009

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Stockfish 16012901 - new development version very strong chess engine UCI

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Stockfish - chess engines UCI

Previous version chess engine Stockfish

Author compilation - Leonid Pechenik
Information on the compilation: Timestamp: 1454028427 

Time management simplification 

10+0.1: 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 41963 W: 7967 L: 7883 D: 26113 

60+0.6: 
LLR: 2.96 (-2.94,2.94) [-3.00,1.00] 
Total: 132314 W: 17939 L: 17969 D: 96406 

Resolves #580 

JCER=3256

Stockfish 16012901 - download

Nero6 Pro 4.2b wins Test New Engines, 2016.01.26 - 2016.01.28

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264 games download  Temp: 3' + 3"
Hardware: Intel(R) Core(TM) i7-4710MQ CPU @ 2.50GHz z 7,9 GB pamiêci
Operating system: Windows 10 Home Home Edition (Build 9200) 64 bit  GUI-Arena 3.5.1Book Perfect 2015Table created:Scid vs PC

Stockfish 16012415 - new development version very strong chess engine UCI

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Stockfish - chess engines UCI

Previous version chess engine Stockfish

Author compilation - Guenther Demetz
Information on the compilation: Timestamp: 1453644481 
rotating symmetric patterns with increasing skipsize 
STC:  LLR: 2.95 (-2.94,2.94) [0.00,5.00] sprt @ 5+0.1 th 21  Total: 7068 W: 1121 L: 975 D: 4972 
LTC:  LLR: 2.96 (-2.94,2.94) [-3.00,1.00] sprt @ 12+0.12 th 21  Total: 26691 W: 3594 L: 3481 D: 19616 
No functional change with a single thread 
Resolves #574 

JCER=3256

Stockfish 16012415 - download

Chess engine: Fairy-Max 5.0

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Fairy-Max winboard chess engines

Author - H.G.Muller

Fairy-Max 5.0 download


ProDeo 2.1 chess engine and soft. New version!

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ProDeo - UCI chess engines

AuthorEd Schroeder

Website ProDeoJECR ranking = 2530

ProDeo 2.1 download


Cheng4 wins 2 League (Chess Engines League JCER), edition 02/2016. 2016.01.21 - 2016.01.26

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Congratulations to Martin Sedlak!

Promote to 1 League Cheng4andGaviota
Demoted to 3 League DeepJunior and EXchess

480 games download  Temp: 3' + 3"
Hardware: Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB system: Windows 8.1 64 bit  GUI-Arena 3.5.1Book: Perfect 2015Table created:Scid vs PC


Chess engine: Stockfish BC 250116

Chess engine: Kenny ClassIQ 0.3 build 3238

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Kenny ClassIQ - winboard chess engine

Author: Kenshin Himura

Kenny ClassIQ 0.3 build 3238 - download



Stockfish BC 210116 wins Test New Chess Engines, 2016.01.23-25

Test New Chess Engines, 2016.01.23-25

REngineJcerScoreStStStSuSuBeStBeGuStS-B01Stockfish BC 210116 x64325821.0/36· ·· ·==========1=1===1========0==1===1=11 354,75 02Stockfish 7 x64 325821.0/36====· ·· ·=1=00================1==111=111= 348,00 03Stockfish 16011622 x64 325820.0/36=====0=1· ·· ·===============11========1=1 345,00 04SugaR Beta1 x64 324020.0/36==0=1=======· ·· ·=====0=======1==1====111 335,75 05SugaR 2.0 x64 324020.0/360===============· ·· ·======1===10===111=1 335,50 06BetaFish 1.2.1 x64 300019.5/360============1======· ·· ·============111= 329,50 07Stockfish 16011823 x64 325819.5/36===========0======0=====· ·· ·==1=1===11=1 326,50 08BetaFish 1.2 x64 300018.5/36=1===0==0====0====01======0=· ·· ·=11===11 313,75 09Gull 3.0.1 x64 307814.5/360===000=====0======0====0====00=· ·· ·=11= 246,75 10Strelka 5.7 x64 30406.0/360=00000==0=0=000

Chess Engines Prehistory - League 09.2010

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CeruleanJS - new chess engines

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CeruleanJS - JavaScript Chess Engine (winboard)

Author - Joey Robert


CeruleanJS v0.1.1 (Blizzard) downloadable on the site


Gull 3.0.1 - very strong chess engine UCI. New version

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Gull - UCI enginesAuthor: Vadim Demichev
Gull websiteJCER ranking = 3078 !

Gull 3.0.1 download



Chess engine: Betafish 1.2.1

Chess engine: SF7 160120VK

SugaR Beta1 - strong chess engine!

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Sugar - UCI chess engine

Author - Marco Zerbinati 

Previous version chess engine Sugar


SugaR Beta1 - download


Chess engine: Stockfish BC 210116

Chess engine: Betafish 1.2

Andscacs 0.85 - UCI chess engine

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Andscacs - UCI chess engine

Author - Daniel Jose Queralto



JCER rating old version: Andscacs 0.83 = 2852,


All engines downloadable on the site


Stockfish 16011823_lucasart - new development version very strong chess engine UCI

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Stockfish - chess engines UCI

Previous version chess engine Stockfish

Author compilation - Lucasart
Information on the compilation: Timestamp: 1453155702 
Retire RootNode template 
There is no reason to compile 3 different copies of search(). PV nodes are on the cold path, and PvNode is a template parameter, so there is no cost in computing: 
const bool RootNode = PvNode && (ss-1)->ply == 0; 
And this simplifies code a tiny bit as well. 
Speed impact is negligible on my machine (i7-3770k, linux 4.2, gcc 5.2): 
nps +/-  test 2378605 3118  master 2383128 2793  diff -4523 2746 
Bench: 7751425 
No functional change. 
Resolves #568 

Komodo 7a wins 1 League (Chess Engines League JCER), edition 02/2016. 2016.01.16 - 2016.01.21

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Congratulations to Don Dailey, Larry Kaufman, Mark Lefler!

Demoted to 2 League Shredder 12 and Quazar
Promote to Super League DeepRybka 4.1 and Protector

480 games download  Temp: 3' + 3"
Hardware: Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB system: Windows 8.1 64 bit  GUI-Arena 3.5Book: Perfect 2015Table created:Scid vs PC


Stockfish 16011823 - new development version very strong chess engine UCI

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Stockfish - chess engines UCI

Previous version chess engine Stockfish

Author compilation - Guenther Demetz
Information on the compilation: Timestamp: 1453154678 
Depth margin parameter-tweak in TT-save 
Verified that is improvement with multiple threads: 
LLR: 2.95 (-2.94,2.94) [0.00,4.00] sprt @ 30+0.3 th 3  Total: 14817 W: 2103 L: 1915 D: 10799 
LLR: 2.96 (-2.94,2.94) [0.00,4.00] sprt @ 15+0.15 th 7  Total: 10264 W: 1498 L: 1321 D: 7445 
Verified that is not a significant regression with a single thread: 
LLR: 2.96 (-2.94,2.94) [-4.00,0.00] sprt @ 60+0.6 th 1  Total: 23975 W: 3294 L: 3210 D: 17471 
Resolves #575 

JCER=3256

Stockfish 16011823 - download