GES____________________________________?

About GES

GES is a free chess game began around mid 2003 and continues to be a work in progress. It has an estimated ELO of 2000 [on a 2Ghz computer].
It is a console program with 'text' graphics and commands.[ie., you move by typing, eg., e2e4] But ..
GES is also designed to work with a seperate GUI [Graphical User Interface] like WinBoard or Arena. Both are FREE!

Usage

Download WinBoard and save to any directory [default download location for your browser is fine - but remember where it is! :)]
Run [double-click] the downloaded program to install WinBoard
Download GES_132.zip and save it to WinBoard installation directory [eg., c:\program files\winboard]
Unzip GES.zip to c:\program files\winboard [it will create \GES_132] and launch GES by double-clicking the GES shortcut!
[You can copy the GES shortcut to your desktop or start menu or quickstart panel for easy access to your new free chess game]

Thanks

Many thanks to contributors, authors, tournament directors, and posters at ComputerChessClub and Winboard Forum including but not limited to:

Mike Compotaro	for his generous donation of Internet access without which none of this is possible
Gilbert E Singer	for his friendship and patience at the beginning when GES was known only to us as 'Bob'.
Tom Kerrigan	for the excellent teaching example of TSCP
Bruce Moreland	for his comments in CCC and his website
Leo Dijksman	for his WBEC tournament and testing
Lars Hallerström	for testing and rating lists
Prof. Robert Hyatt	for his exhaustive knowledge permeating the whole of computer chess literature on the net
Dann Corbit	many contributions of code and help
Dan Honeycutt	for his opening book and code
Günther Simon	for the RWBC tournament and help debugging
Heinz van Kempen	for his Nunn/AEGT tournaments
Olivier Deville	for ChessWar tournament and his help debugging
Ed Schröder	for his very informative website
David Dahlem	for GES' logo
Volker Pittlik	for hosting Winboard Forum

Technical Details

Language: C++ and compiled with MSVC 2005 express beta

Internal Board: 0x88 style array

Search: PVS alpha-beta fail-soft with:

0.40 Pawn Aspiration window radius
null-move R=2 - not verified
internal iterative deepening.
Move order: hash/IID, winning caps [MVV/LVA], 2 killers, history, losing caps [all scores augmented by PST]
Extensions:

check -unlimited!
pawn to 7th -unlimited!
mate threat -unlimited!
1 resp to check -unlimited!
recapture - [capture to same sq results in original material balance] unlimited!

Quiescent Search includes:

all captures
check evasions [1st ply only ]
queen promotions [ no under promotions]
castling moves

Also implemented:

hash tables [main & pawn]
basic time management
resign
draw offer

To do:

Learning
Pondering

History

Version	release	notes
GES_131	12.14.04	coming soon
GES_130	11.18.04	1st nearly bug less release - NB 'nearly' !

Source

GES_132_src