Sinobyl

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Sinobyl, initially called Latista and in 2008 renamed to Sinobyl due to trademark issues , is a WinBoard compliant chess engine by Eric Oldre, written in C++, and first released in 2004 . Sinobyl, aka Latista 1.4, was one of the first engines besides Scorpio and Gambit Fruit, to use Daniel Shawul's Scorpio Bitbases. Sinobyl was later ported to C#, with rotated bitboards replaced by magics , released in 2014 as NoraGrace, dedicated to Nora Grace Oldre who was taken from Eric and his wife unexpectedly a few days before she was due to be born.

=Description= based on Latista 1.5

Board Representation

 * Bitboards
 * Rotated Bitboards

Search

 * Iterative Deepening
 * Aspiration Windows
 * Alpha-Beta
 * Transposition Table
 * Move Ordering
 * Hash Move
 * Internal Iterative Deepening
 * Killer Move
 * Static Exchange Evaluation
 * Selectivity
 * Null Move Pruning
 * R=3
 * Verification Search in Endgame
 * Fractional Extensions
 * Check Extensions
 * Passed Pawn to 7th Rank Extensions
 * Horizon Threat Extensions
 * Futility Pruning
 * Reductions
 * Quiescence Search
 * To avoid standing pat in quiescence where pieces of the side to move were just attacked and en prise, Eric Oldre introduced Horizon Threat Extensions in Latista 1.4.

Evaluation

 * Material
 * Pawn Hash Table
 * Piece-Square Tables
 * King Safety
 * Pawn Shelter


 * Pawn Races
 * Development
 * Piece Activity

=See also=
 * NoraGrace

=Forum Posts=
 * Bitboard board representation by Eric Oldre, CCC, January 13, 2005
 * An interesting bug i found tonight in latista by Eric Oldre, CCC, January 16, 2005
 * Idea i'm been using to help tune latista by Eric Oldre, CCC, January 24, 2005
 * Latista 1.3 released by Eric Oldre, CCC, July 02, 2005
 * Latista 1.4 released. (Rybka killer edition!) by Eric Oldre, CCC, December 23, 2005
 * Latista 1.5 by Eric Oldre, CCC, January 13, 2006
 * Re: new/updated engines: 2008/11/28-29 by Eric Oldre, Winboard Forum, December 01, 2008
 * New open source engine in C# - NoraGrace by Eric Oldre, CCC, June 20, 2014

=External Links=

Chess Engine

 * Index of /chess/engines/Norbert's Collection/Sinobyl 1.5 release 29.11.2008 by Norbert Raimund Leisner, hosted by Kirill Kryukov
 * Latista (Sinobyl) 1.5 in CCRL 40/4
 * Latista (Sinobyl) 1.5 in KCEC
 * trunk/Sinobyl | SVN | Assembla (NoraGrace)

Misc

 * latista - Wiktionary
 * latistaa - Wiktionary


 * Sino- - Wiktionary
 * Wordlist sinobyl... | Welsh Prose 1300-1425
 * Chernobyl - Name origin | byllia (билля, grass blades or stalks)

=References= Up one Level