Engine Updates

DoubleCheck 2.4 (UCI)
C source; Win64, Linux64
- search: rewrote the PVS + reduction bit a little. Thanks to Marco Costalba for his advice on this
- MAX_GAME_PLY now equals 0x400, so games can safely last 0x400-0x80 half-moves before the game stack writes out of its allocated memory and crashes everything
- qsearch: do not write in the TT when the move loop was empty
- eval: mobility rewritten, should make a bit more sense now
- search: introduced double reductions for late quiet moves
- search: do not reduce castling moves
- search: eval pruning rather than reduce
http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html (Leo page)

SharpChess2 2.6.9 (WB)
C# source; own GUI; Win32/64; requires .NET Framework version 4.0 (or later)
- the website download links are not working correctly
http://sharpchess.com/ (homepage)
ftp://sharpchess.com/SharpChess%202.6.9.zip (zip-file direct link)
ftp://sharpchess.com/SharpChessSetup_v2_6_9.msi (msi-file [setup] direct link)

Jim Ablett Win/Linux builds
Stockfish 2.2.2 JA (UCI)
C++ source; mp; FRC; Win32/64, Linux32/64, Mac, Android
- fix for computers having problems with previous Win64 builds
http://dl.dropbox.com/u/5047625/stockfish-222-wintel64-ja.zip (direct link)

Chess News

Norm Pollock site
PGN, EPD & TXT Utility Suites and Opening Book PGN Databases
- updated: PosFiles (EPD database files of opening positions)
http://www.hoflink.com/~npollock/chess.html

Down/Problem Chess Websites

Asterisk homepage down for 73 days
ChessAlex homepage is down for 26 days
Dann Corbit homepage down for 202 days

Wiki Changes

Engine GUI List
update by Norbert Raimund Leisner
- ChessRally: added to list
http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:engine_gui_list

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

SMP Engine List
update by Norbert Raimund Leisner
- Rick48: added to list
http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:smp_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

Gedit 3.2.6
cross-platform open source text editor for programmers w/ syntax highlighting, remote editing, etc.
- Windows binary not updated, available as source code only
http://projects.gnome.org/gedit/index.html

Scala.NET 2012-01-15
Scala is a powerful OO, imperative/functional .NET/Mono language for professional programmers w/Actors for concurrency
- this project is in alpha stage, still with a lot of Java baggage
http://lamp.epfl.ch/~magarcia/ScalaNET/ (homepage)
https://github.com/magarciaEPFL/scaladotnet/downloads (download)

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