Simplex

an UCI compliant open source chess engine by Antonio Torrecillas, written in C++ and licensed under the GNU General Public License. Simplex was first published with sources in 2010, while its development already started at least in 2007 with the intermediate name DarkSimplex due to experiments with the published description of DarkThought. || toc =Features=
 * Home * Engines * Simplex**
 * [[image:320px-Simplex_Servi_Cycle_at_Barber_Vintage_Motorsports_Museum.jpg link="https://commons.wikimedia.org/wiki/File:Simplex_Servi_Cycle_at_Barber_Vintage_Motorsports_Museum.jpg"]] ||~ || **Simplex**,
 * Simplex Servi-Cycle ||~ ||^ ||

Board Representation

 * Bitboards
 * Kindergarten Bitboards

Search

 * Iterative Deepening with Aspiration Windows
 * Alpha-Beta Principal Variation Search
 * Transposition Table
 * Quiescence Search
 * Null Move Pruning
 * Late Move Reductions
 * Mate Distance Pruning
 * Futility Pruning
 * Internal Iterative Deepening
 * Killer Heuristic
 * History Heuristic

Evaluation
> Backward Pawn > Passed Pawn > Candidate Passed Pawn
 * Material
 * Piece-Square Tables
 * Tapered Eval
 * Lazy Evaluation
 * Center Control
 * Mobility
 * Pawn Structure
 * Evaluation of Pieces
 * King Safety

=See also=
 * Rocinante
 * Simplex and Complex in Connectivity

=Forum Posts=
 * [|Simplex chess engine] by Olivier Deville, Winboard Forum, November 18, 2009
 * [|Simplex Updated] by Antonio Torrecillas, CCC, April 05, 2010
 * [|Simplex 0.9.6 released] by Antonio Torrecillas, CCC, September 26, 2010
 * [|Simplex 0.9.7 release] by Antonio Torrecillas, CCC, January 10, 2011
 * [|Simplex 0.9.8] by Antonio Torrecillas, CCC, November 20, 2011

=External Links=

Chess Engine

 * [|Barajando Trebejos] (Download Rocinante and Simplex)
 * [|Index of /chess/engines/Jim Ablett/SIMPLEX] by Jim Ablett, hosted by Kirill Kryukov
 * [|Simplex] ín CCRL 40/4

Misc
> media type="youtube" key="1-36nswTvjo" width="560"
 * [|Simplex from Wikipedia]
 * [|Pascal's simplex from Wikipedia]
 * [|Simplex algorithm from Wikipedia]
 * [|Simplex V 1.05] by Peter Österlund
 * [|Simplex graph from Wikipedia]
 * [|Simplex (disambiguation) from Wikipedia]
 * [|Gaetano Valli] - Simplex, [|Jazz Club Gaio], [|Ljubljana] 2009, [|YouTube] Video

=References= =What links here?= include page="Simplex" component="backlinks" limit="40"
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