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Saturday, April 29, 2017

Klasman wins JCER Test Tournament, 2017.04.25 - 2017.04.28



Tournament:JCER Test Tournament, 2017.04.25 - 28 Temp: 3'+ 3"
Hardware: Intel Core i7-4710MQ CPU @ 2.50GHz with 7,9 GB Memory
System: Windows 10 x64
342 Tournament games download
Book: Perfect 2016
161.651 JCER Games download (until 31.12.2016)
GUI: Arena 3.5.1
15.913 JCER games download (from 01.01.2017)
Table created: Scid vs PC
Games, engines, book - download
JCER League

Stockfish 17042905_voyager - new version!


Stockfish, chess engine UCI
Leader rating list JCER = 3405
🔬 Author: VoyagerOne 

More:

Timestamp: 1493437245 

Don't do InCheck Pruning at the root of QS 

STC: 
LLR: 2.96 (-2.94,2.94) [0.00,5.00] 
Total: 34603 W: 6441 L: 6167 D: 21995 

LTC: 
LLR: 2.97 (-2.94,2.94) [0.00,5.00] 
Total: 24474 W: 3274 L: 3076 D: 18124 

Bench: 5934421 
Closes #1089 

⭐⭐⭐   Stockfish 17042905_voyager - download



Shark 170424 (Stockfish clone)



Previous version chess engine Shark 

JCER=3392

Shark 170424 download


Stockfish 17042905_rocky - new version!


Stockfish, chess engine UCI
Leader rating list JCER = 3405
🔬 Author: Rocky640 

More:

Timestamp: 1493437083 

Remove cap in kingDanger initialization 

Passed STC 
http://tests.stockfishchess.org/tests/view/58fd53be0ebc59035df33eb5 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 52048 W: 9397 L: 9329 D: 33322 

Passed LTC 
http://tests.stockfishchess.org/tests/view/58ff9e0a0ebc59035df33f5c 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 35382 W: 4650 L: 4549 D: 26183 

Bench: 5872717 
Closes #1087 

⭐⭐⭐   Stockfish 17042905_rocky - download



Orka 170424 (Stockfish clone) - new version



Rating JCER=3368


Orka 170424 - download

Stockfish 17042905_Costalba - new version!


Stockfish, chess engine UCI
Leader rating list JCER = 3405
🔬 Author: Marco Costalba

More:

Timestamp: 1493436810 

Retire the misdesigned StepAttacks[] array. 

StepAttacks[] is misdesigned, the color dependance is specific to pawns, and trying to generalise to king and knights, proves neither useful nor convinient in practice. 

So this patch reformats the code with the following changes: 
- Use PieceType instead of Piece in attacks_() functions 
- Use PseudoAttacks for KING and KNIGHT 
- Rename StepAttacks[] into PawnAttacks[] 

Original patch and idea from Alain Savard. 
No functional change. 
Closes #1086 

⭐⭐⭐   Stockfish 17042905_costalba - download


Chess engine: Gandalf 7



Stockfish 17042905 - new version!


Stockfish, chess engine UCI
Leader rating list JCER = 3405
🔬 Author: Joost VandeVondele

More:

Timestamp: 1493436544 

Copy killers in the movepicker 
ss->killers can change while the movepicker is active. 
The reason ss->killers changes is related to the singular 
extension search in the moves loop that calls search<> 
recursively with ss instead of ss+1, 
effectively using the same stack entry for caller and callee. 
By making a copy of the killers, the movepicker does the right thing nevertheless. 

Tested as a bug fix 

STC: 
http://tests.stockfishchess.org/tests/view/58ff130f0ebc59035df33f37 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 70845 W: 12752 L: 12716 D: 45377 

LTC: 
http://tests.stockfishchess.org/tests/view/58ff48000ebc59035df33f3d 
LLR: 2.96 (-2.94,2.94) [-3.00,1.00] 
Total: 28368 W: 3730 L: 3619 D: 21019 

Bench: 6465887 
Closes #1085 
⭐⭐⭐   Stockfish 17042905 - download


Arasan 20.1 UCI chess engines (Windows, Linux, Mac) and GUI. New version

Arasan - UCI engines (and GUI)

AuthorJon Dart


Previous version chess engine Arasan 


JCER Rating old version:2920




Arasan 20.1 (engin UCI, Mac, Linux and GUI) download




Stockfish 17042602_snicolet - new version!


Stockfish, chess engine UCI
Leader rating list JCER = 3405
🔬 Author: snicolet

More:

Timestamp: 1493168269 

Avoid misuse of StepAttacksBB for pawns 

Make it explicit that first index of StepAttacksBB is a piece, not a piece type. 

No functional change 
Closes #1083  

⭐⭐⭐   Stockfish 17042602_snicolet - download