BigLion

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BigLion, a Chess Engine Communication Protocol aka WinBoard and UCI compliant chess engine by Matthias Gemuh, written in C++ using Borland C++Builder 5.0, first released in April 2002 as announced by Frank Quisinsky. Since 2.23w in fall 2005, BigLion is able to play Chess960.

=Features=

Board Representation

 * Bitboards
 * Rotated Bitboards

Search

 * Iterative Deepening
 * Aspiration Windows
 * PVS
 * Selectivity
 * Null Move Pruning
 * Fractional Extensions
 * Razoring
 * Move Ordering
 * Hash Move
 * Internal Iterative Deepening
 * Killer Heuristic
 * History Heuristic
 * Static Exchange Evaluation

Evaluation

 * Material
 * Pawn Structure
 * Bishop Pair
 * Rook on Open File
 * Rook (Queen) on 7th
 * Center Control
 * Mobility
 * Trapped Bishop
 * Connectivity
 * Early Queen
 * King Safety
 * Pawn Shield
 * King Tropism
 * Attacking King Zone
 * Castling rights
 * Forks
 * Pins

Hash Tables

 * Two-tier Transposition Table in Main Search
 * Always Replace Transposition Table in Quiescence Search
 * Evaluation Hash Table
 * Pawn Hash Table
 * Move Lists

=See also=
 * ChessGUI
 * Lion
 * Mammal
 * Taktix

=Forum Posts=

2002 ...
2003 2004
 * WB/UCI BigLion by Matthias Gemuh is available! by Frank Quisinsky, Winboard Forum, April 23, 2002
 * BigLion 0.3 by Matthias Gemuh, Winboard Forum, April 27, 2002
 * BigLion now has Homepage by Matthias Gemuh, Winboard Forum, April 30, 2002
 * BigLion 0.5 by Matthias Gemuh, Winboard Forum, May 02, 2002
 * BigLion 1.0 by Matthias Gemuh, Winboard Forum, July 13, 2002
 * BigLion against world elite by Matthias Gemuh, Winboard Forum, August 04, 2002
 * BigLion 1.3 by Matthias Gemuh, Winboard Forum, October 11, 2002
 * BigLion and Tournaments by Matthias Gemuh, CCC, October 31, 2002
 * BigLion and fine 70 by Sune Fischer, Winboard Forum, December 09, 2002 » Lasker-Reichhelm Position
 * BigLion says Good Bye by Matthias Gemuh, Winboard Forum, March 01, 2003
 * BigLion: Now he too can cheat ! by Matthias Gemuh, Winboard Forum, May 07, 2003
 * BigLion+Taktix : no more updates by Matthias Gemuh, Winboard Forum, June 09, 2003
 * For Matthias: a question about Big Lion/Taktix by Telmo Escobar, Winboard Forum, June 21, 2003
 * BigLion loses 100 Elo points and also 50% speed by Matthias Gemuh, Winboard Forum, August 01, 2003
 * About BigLion 2.23n (and AEGT) by Matthias Gemuh, Winboard Forum, July 28, 2004

2005 ...

 * Chess960 in Fritz9GUI and Winboard_frc by Matthias Gemuh, CCC, November 24, 2005
 * BigLion 2.23w and Taktix 2.23w by Matthias Gemuh, CCC, November 24, 2005


 * BigLion 2.23x : 2017 by Patrick Buchmann, CCC, October 06, 2007
 * BigLion80 by Matthias Gemuh, CCC, January 16, 2008
 * BigLion and burn out by Matthias Gemuh, CCC, July 17, 2009
 * CCC Forum vs BigLion chess960 by Spock, CCC, September 14, 2009

2010 ...

 * BigLion and his clan have moved by Matthias Gemuh, CCC, July 14, 2014

=External Links=

Chess Engine

 * BigLion Homepage
 * BigLion in CCRL 40/40

Misc

 * Lion from Wikipedia
 * Barbary lion from Wikipedia
 * Lion (disambiguation) from Wikipedia
 * Manu Dibango - Lion of Africa, at the Barbican Centre, London, March 2007, YouTube Video

=References=

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