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Showing posts from September, 2017

Stockfish 17092916 - new version!

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Stockfish, chess engine UCI

Rating JCER = 3401
🔬 Author: Joost VandeVondele

More:
Timestamp: 1506695952 

Measure nodes after search finished. 
Only affects nmpsec in the multithreaded case. 

No functional change. 

⭐⭐⭐   Stockfish 17092916 - download

Chess engine: Zorgus

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Zorgus - UCI/Winboard chess engine.
This chess engine is based on the work of George Georgopoulos and Tom Kerrigan.
Homepage

Author - Olivier de Lannoy

Zorgus - download

Chess engine: Cfish 300917

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Rating JCER=3339

Cfish 300917 - download

Chess engine: Shallow 1.0.3

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Shallow 1.0.3 download

Author - Dmitry Sultanov

Rating JCER=2268

Chess engine: Sf290917MZ

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Author - Marco Zerbinati

Sf290917MZ - download

Chess engine: Marvin 2.2.0

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Marvin - Winboard/UCI chess engine

Rating JCER=2402

Homepage

Author - Martin Danielsson

Marvin 2.2.0 - download




Jurek Chess Engines Rating 01.10.2017

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Shark 170827bf wins JCER Test Tournament, 2017.09.21 - 2017.09.29

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Temp 3' + 3" Hardware: Intel Core i3-3217U CPU 3,9 GB Memory , Windows 10 x64
924 Tournament games, GUI-Arena 3.5.1161.651 JCER games,  until 31.12.2016
45.406 JCER games (from 01.01.2017)  JCER League
Book: Perfect 2017,   Table created - Scid vs PC

Chess engine: Symphysodon 290917

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Symphysodon 290917 - download

Rating JCER=3389

Author - Jose Perez

Chess Engine: BrainFish 170923 and book: Cerebellum Light 170925

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BrainFish - UCI chess engine

Information from the author:
Brainfish is a standard Stockfish chess engine extended by a general book format that is capable of handling a reduced part of Cerebellum, which is an innovative chess opening and playing book. In Brainfish, the book moves are only used in engine games, not in analysis mode.

All moves in the published book Cerebellum_light.bin generated by Cerebellum were calculated by using
Stockfish as analysis engine, without using statistics. Then those moves where recalulated by the Cerebellum Library using a graph algorithm that makes all scores in the library consistant. Consistant scores means for example, in case the starting position has a score of 0.2 and a best move is 1.e4, the position after 1.e4 must have the score -0.2. Additionally, some others properties are found, like the best main line of a position and possible Transitions.

Hence, when Brainfish is playing moves that are in the Cerebellum book, it plays like Stockfish regarding…

SugaR XPrO 280917 - very strong chess engine!

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Sugar - UCI chess engine

Author - Marco Zerbinati 

JCER=3370

SugaR XPrO 280917 - download

Chess engine: Rubichess 0.5TM

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Chess engine: Dimitri 3.81

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Dimitri - winboard chess engine
Homepage
Author - Luigino Viscione

JCER rating=2151

Dimitri 3.81 - download

Chess engine: asmFish 250817-tactic

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JCER Rating=3409

asmFish 250817-tactic - download


Stockfish 17092216 - new version!

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Stockfish, chess engine UCI

Rating JCER = 3427
🔬 Author: GuardianRM

More:
Timestamp: 1506091688 

Tweak statScore condition 
The first change (ss->statScore >= 0) does nothing. 

The second change ((ss-1)->statScore >= 0 ) has a massive change. (ss-1)->statScore is not set until (ss-1) begins to apply LMR to moves. 
So we now increase the reduction for bad quiets when our opponent is running through the first captures and the hash move. 

STC 
LLR: 2.95 (-2.94,2.94) [0.00,4.00] 
Total: 57762 W: 10533 L: 10181 D: 37048 

LTC 
LLR: 2.95 (-2.94,2.94) [0.00,5.00] 
Total: 19973 W: 2662 L: 2480 D: 14831 

Bench: 5037819 

⭐⭐⭐   Stockfish 17092216 - download


Chess Engines E - update

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Sayuri 2017.09.26 - new version chess engine UCI

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Sayuri - UCI chess engine

Author - Hironori Ishibashi
Rating JCER=1834

Sayuri 2017.09.26 download

Sabrina 3.0.23 - new version chess engine!

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Sabrina - winboard chess engine

Sabrina - changed the name "Satana" to "Sabrina". 
Author - Stefano Gemma
Homepage

Rating JCER=1217

Sabrina 3.0.23 download

Chess22k 1.5 wins 4 League JCER, edition 05/2017, 2017.09.20 - 2017.09.28

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Temp 3' + 3" Hardware: Intel Core i7-4710MQ with 7,9 GB Memory , Windows 10 64-bit
924 Tournament games, GUI-Arena 3.5.1161.651 JCER games,  until 31.12.2016
45.406 JCER games (from 01.01.2017)  JCER League
Book: Perfect 2017,     Games, engines, book - download       Table created - Scid vs PC



Jumbo 0.5.3 - winboard chess engine. New version!

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Jumbo - winboard chess engine

Important notes:
The Win64 binary was built using CygWin GCC 5.4.0 and requires the following DLLs that are part of the CygWin installation:
cyggcc_s-seh-1.dll
cygstdc++-6.dll
cygwin1.dll

Rating JCER=2199
Author - Sven Schüle, Berlin (Germany)

Jumbo 0.5.3 - download

SugaR XPrO 1.3 - very strong chess engine!

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Sugar - UCI chess engine

Author - Marco Zerbinati 

JCER=3370

SugaR XPrO 1.3 - download

Amoeba 2.6 - UCI chess engine. New version!

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Amoeba - UCI chess engine (D language)

Rating JCER=2664

Amoeba 2.6 - download

Fire 6.1 - new version best UCI chess engines!

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Fire - UCI chess engine

author compilation - by Norman Schmidt

Rating JCER=3164

Fire 6.1 download

Only for donors added: 54 chess engines and book

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Only for sponsors added 53 chess engines (folder: ChessEnginesFree):
andscacs0.92.7z Aristides_v2.0d_010917.7z BrainFish_170831.7z bullitchess_1.0.7z cheese-1.91.7z ChessBrainVB_V3_50.7z CorChess_1.8_070917_x32-x64.7z demolito_20170826.7z DirtyBit.0.39.5.t5.7z EnkoChess-010917.7z Ethereal8.27.7z Fire_6.7z galjoen_v0.36.0.1.7z ISA 2_0_48.7z Joker 0.7.7.7z Klasman Father.7z McBrain2.7.7z Monolith_03.7z Nemorino_3.04_win64.7z Orka 170917.7z Raubfisch ME262_GTZ13b.7z Raubfisch ME262_GTZ15.7z Raubfisch ME262_GTZ15a.7z Raubfisch ME262_GTZ15b..7z Raubfisch X36.7z Raubfisch X36a.7z Raubfisch X36b.7z RuFuS yz-r01.7z RuFuS yz-r02.7z RuFuS yz-r03.7z ruydos 1.0.27.7z sctr_1.0.7z Sf030817MZ.7z SF-McBrain27.zip Shark 170827 x64 bf.7z Shark 170917 bf.7z stockfish_17082611.7z stockfish_17083015.7z stockfish_17083108.7z stockfish_17090120.7z stockfish_17090120_costalba.7z stockfish_17090120b.7z stockfish_17090209.7z stockfish_17090510.7z stockfish_17090510_syzygy.7z stockfish_17090912.7z stockfish_1709…

Free chess engines - download update

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Fire 6.0 - new version best UCI chess engines!

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Fire - UCI chess engine

author compilation - by Norman Schmidt

Rating JCER=3164

Fire 6.0 download

Chess engine: Monolith 0.3

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Monolith - UCI chess engine
Author - Jonas Mayr
Rating JCER=1406

Monolith 0.3 - download


Chess engine: Joker (2) 0.7.7

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Joker (2) - UCI chess engine
Author - Manlio Morini

Joker (2) 0.7.7- download

Chess engine: Dirty-Bit 0.39

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Dirty-Bit - UCI chess engine
Author - Andrew Backes

Dirty-Bit0.39 - download

Raubfisch ME262 GTZ15 wins JCER Test Tournament, 2017.09.14 - 2017.09.18

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Temp 3' + 3" Hardware: Intel Core i3-3217U CPU 3,9 GB Memory , Windows 10 x64
480 Tournament games, GUI-Arena 3.5.1161.651 JCER games,  until 31.12.2016
45.406 JCER games (from 01.01.2017)  JCER League
Book: Perfect 2017,   Table created - Scid vs PC

Shark 170917bf (has Cerebellum book integrated in exe file.)

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Texel 1.07a35 - UCI Chess engine. New version

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Texel - UCI Chess engines

Author - Peter Osterlund

Rating JCER=2979 (19 place in Super League)

Texel 1.07a35 download

Stockfish 17091710 - new version!

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Stockfish, chess engine UCI

Rating JCER = 3427
🔬 Author: Syzygy 

More:
Timestamp: 1505637850 

Let ss->ply denote the number of plies from the root to the current node 

This patch lets ss->ply be equal to 0 at the root of the search. 

Currently, the root has ss->ply == 1, which is less intuitive: 

- Setting the rootNode bool has to check (ss-1)->ply == 0. 

- All mate values are off by one: the code seems to assume that mated-in-0 
is -VALUE_MATE, mate-1-in-ply is VALUE_MATE-1, mated-in-2-ply is VALUE_MATE+2, etc. 
But the mate_in() and mated_in() functions are called with ss->ply, which is 1 in 
at the root. 

- The is_draw() function currently needs to explain why it has "ply - 1 > i" instead 
of simply "ply > i". 

- The ss->ply >= MAX_PLY tests in search() and qsearch() already assume that 
ss->ply == 0 at the root. If we start at ss->ply == 1, it would make more sense to 
go up to and including ss->ply == MAX_PLY, so stop at ss->ply > MAX…

Orka 170917 (Stockfish clone) - new version

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Stockfish 17091710 - new version!

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Stockfish, chess engine UCI
Rating JCER = 3427 🔬 Author: Stéphane Nicolet 
More: Timestamp: 1505634747 
Score unopposed weak pawns only if majors 

Do not use the opposed flag for scoring backward and isolated pawns 
in pawns.cpp, instead give a S(5,25) bonus for each opponent unopposed 
weak pawns when we have a rook or a queen on the board. 

STC run stopped after 113188 games: 
LLR: 1.63 (-2.94,2.94) [0.00,5.00] 
Total: 113188 W: 20804 L: 20251 D: 72133 

LTC: 
LLR: 2.95 (-2.94,2.94) [0.00,5.00] 
Total: 66673 W: 8672 L: 8341 D: 49660 

This is Alain Savard's idea, just with a different bonus. 
Bench: 6259498 

⭐⭐⭐   Stockfish 17091709 - download

Nemorino 3.04 - UCI chess engine. New version!

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Nemorino - UCI chess engine

Author - Christian Günther
Home page

Rating JCER=2901

Nemorino 3.04 download

Roc 0.8 wins 3 League JCER edition 05/2017, 2017.09.11 - 2017.09.20

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Temp 3' + 3" Hardware: Intel Core i7-4710MQ with 7,9 GB Memory , Windows 10 64-bit
924 Tournament games, GUI-Arena 3.5.1161.651 JCER games,  until 31.12.2016
45.406 JCER games (from 01.01.2017)  JCER League
Book: Perfect 2017,     Games, engines, book - download       Table created - Scid vs PC

Free chess engines - download update

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Chess engine: Raubfisch ME262 GTZ15b

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Raubfisch is an engine derived from Stockfish and Torpedo 1.1 XJR (private engine by Frank Karl Werner and Max Fehler)

Rating JCER - 3341

Raubfisch ME262 GTZ15b - download

Cheese 1.91 - UCI chess engine (Windows, Mac, Android and Linux). New version!

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Cheese - UCI chess engines
Homepage


Rating JCER=2536


Author - Patrice Duhamel

Cheese 1.91 download



Andscacs 0.92 - UCI chess engine. New version!

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Andscacs - UCI chess engine  

Author - Daniel Jose Queralto

 Home page 

JCER rating old version: = 3102


Andscacs 0.92 download



Stockfish 17091212 - new version!

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Stockfish, chess engine UCI

Rating JCER = 3427
🔬 Author: Ilvec

More:
Timestamp: 1505212313 

Higher Move Overhead 

This shoudl reduce time losses experienced by users after new time management code. 

Verified for no regression in very short TC (4sec + 0.1) 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 35262 W: 7426 L: 7331 D: 20505 

Bench 5322108 

⭐⭐⭐   Stockfish 17091212 - download

Chess engine: Raubfisch X36b

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Raubfisch is an engine derived from Stockfish and Torpedo 1.1 XJR (private engine by Frank Karl Werner and Max Fehler)

Rating JCER - 3341
Raubfisch X36b - download

Stockfish 17090912 - new version!

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Stockfish, chess engine UCI

Rating JCER = 3427
🔬 Author: Ianfab

More:
Timestamp: 1504952614 

Extend ShelterWeakness array by dimension isKingFile 

Use different penalties for weaknesses in the pawn shelter 
depending on whether it is on the king's file or not. 

STC 
LLR: 2.96 (-2.94,2.94) [0.00,5.00] 
Total: 71617 W: 13471 L: 13034 D: 45112 

LTC 
LLR: 2.95 (-2.94,2.94) [0.00,5.00] 
Total: 48708 W: 6463 L: 6187 D: 36058 

Bench: 5322108 

⭐⭐⭐   Stockfish 17090912 - download

Chess engine: SCTR 1.0

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SCTR 1.0 - download

Authors: Can Cetin & Dogac Eldenk





Chess engine: Klasman Father

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Isa 2.0.48 - winboard chess engine (Windows and Linux)

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Isa - winboard chess engine

About engine: Isa is a chess engine I developp during my free time. Chess programming is my hobby since the 80's years. I started developing with QuickBasic 4.5 (I wrote a weak engine named Bishop) .
Then I learned the C langage and studed the TSCP source code (like everyone I think) .
« Titan » and « DCP » (DCP = Titan + winboard protocol) was born . Strengh was always so weak , around 1400 elo .
After that I rewrote again my engine and Jars came out (I released Jars) and then Yoda (both played around 1800-1900 elo.
After finding dificult to improve , I stopped working on both engines and started to work on Isa , a diferent way.
I started Isa from Firstchess.c source.

Author - Daniel Anulliero

Rating JCER=2078

Isa 2.0.48 - download

TCEC Season 10 is starting about October 10th

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TCEC Season 10
Stage 1 - preliminary stage.
Involving 24 engines, playing a single round robin.
Time control: 60 min. + 10 sec/move.
The top 8 engines qualify for the next stage!

Confirmation of participation:
1. Andscacs
2. Vajolet
3. Fruit
4. Laser
5. Texel
6. Stockfish
7. Jonny
8. Fire
9. Nirvana
10. Komodo
11. Chiron
12. Fizbo