Engine Updates

Chiron 2 (WB/UCI)
commercial, FRC, mp; multiPV; adjust strength; supports Polyglot opening books; supports Nalimov, Gaviota, & Scorpio egtbs; Win32/64
- new opening book released
http://www.chironchess.com/

José M Velasco Windows32/64 builds
Protector 1.6.0 JMV (UCI)
C source; Win32/64, Linux32/64, Mac64
- new unofficial compile, not by engine author
http://motorchess.blogspot.com.es/ (download)

Rhetoric 1.1 (UCI)
Win32/64; uses a genetic algoritm to 'train' the playing style towards human GM style
- "it must be around 90 Elo stronger than 1.0 version"
- evaluation correction symmetries
- fixed recognition of some simple end evaluation of passed pawns distant king
- fixed LMR in PV
- correction razoring
- correction in the window treatment in PVS
- correction in management time controls with increment
- change in Hash Table: now stores maximum and minimum value
- using aspiration in root node
http://www.chessrhetoric.com/

Sayuri 2013.12.23 (UCI)
Sayuri 2013.12.22 (UCI)
C++ source (Japanese comments); mp (up to 64 cores); Linux64
- Linux64 compile is available
- otherwise it is available as source code only
- intended for clang compiler using cmake
- it looks like these releases are nightly builds
http://github.com/MetalPhaeton/sayuri/tree/master/SayuriCompiled/Linux/For64Bit (Linux64)
http://github.com/MetalPhaeton/sayuri/releases (source + Linux build)

Chess News

Nothing new today

Chess Programming Blogs

iCE: http://macechess.blogspot.de/2013/12/queen-vs-3-minors-part-2.html

Wiki Changes

GUI Protocol List
update by Norbert Raimund Leisner
- HFT-Stuttgart GDV 2013 Schach: expanded comment
http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:gui_protocol_support_list

Engine GUI List
update by Norbert Raimund Leisner
- added Fire with HFT-Stuttgart GDV 2013 Schach GUI
- added HFT-Stuttgart GDV 2013 Schach
http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:engine_gui_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

ClearOS 6.5.0
RedHat-based Linux distro (on CentOS); GNOME, KDE desktops; #60 in popularity
http://www.clearfoundation.com/

Sabayon Linux 14.01
Gentoo-based, rolling release distro; choice of desktops: GNOME, KDE, MATE or Xfce; #25 in popularity
http://www.sabayon.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