Engine Updates

Cheese 1.4 (WB/UCI)
Win32/64, Linux32/64
- fix a problem with killer moves
- fix a problem with history heuristic
- increase buffer size for UCI/Winboard
- optimize move generation
- optimize makemove/unmakemove
- optimize futility pruning
- optimize SEE calls
- remove killer moves at ply - 2
- remove mate killer moves
- add tapered evaluation for piece table
- improve evaluation function
- improve king safety
- reduce number of calls for the time check function
- show time and speed in perft and divide
- add UCI option to clear hash table
- increase maximum size of hash table to 4096 Mo
based on self-test data, strength improvement is about 90 Elo
http://cheesechess.free.fr/en/download.html

DoubleCheck 3.0 (UCI)
C source; Win64, Linux64
- eval command now returns a full breakdown of eval components
- eval mostly rewritten
- aspiration windows
- code cleanup
http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html (Leo page)

Chess News

Scid vs. PC 4.7.1 (WB/UCI)
open source fork of Scid project enhanced for playing chess
Win32, Mac & .tgz source for Linux
- new Windows build only
http://scidvspc.sourceforge.net/index.html (homepage)
http://sourceforge.net/projects/scidvspc/files/windows/Scid%20vs%20PC-4.7.1.exe/download (direct link)

Down/Problem Chess Websites

Dann Corbit homepage down for 264 days
Heracles homepage down today ("Erreur interne du serveur")
Rick48 homepage down today (PHP parse error)

Wiki Changes

Mobile Chess List
update by Norbert Raimund Leisner
- revised comments for Aart Bik's Chess Engines for Android
http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:mobile_chess_list

Variants Engine List
update by Norbert Raimund Leisner
- added Catalyst
http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:variants_engine_list

Bonus Notifications (recent releases of free stuff)

Warnings:
- do not install unwanted toolbars, etc.
- alpha releases have new features; crashes and bugs are to be expected
- beta releases have new features; they may contain bugs or crash
- release candidate software may contain minor bugs; crashes are rare

PDFCreator 1.3.1
free Windows tool to create PDF files from nearly any application
http://www.pdfforge.org/

Meaning of Colors

Red = New or Warning
Green = Updated
Gray = Info Only

Engine List: http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:chess_engine_list
Chess News: http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:chess_news_list

NOTE: If you want me to track a website for you, please email me and I will add it.
ron _at_ computer-chess _dot_ org