Atlas+(ESP)

an UCI compliant chess engine by Andrés Manzanares Campillo written in C++, with executables running under Linux and Windows. The development of Atlas started in 2004, initially representing the board as 0x88 vector attacks mailbox along with piece-lists, supporting WinBoard, and written in C. Atlas **2.90** was a complete rewrite released in June 2011, a bitboard approach only supporting UCI. || toc =Features=
 * Home * Engines * Atlas**
 * [[image:Atlas_Santiago_Toural_GFDL.jpg link="https://commons.wikimedia.org/wiki/File:Atlas_Santiago_Toural_GFDL.jpg"]] ||~ || **Atlas**,
 * Sculpture of [|Atlas] ||~ ||^ ||

Board Representation

 * Bitboards
 * Magic Bitboards

Search

 * Iterative Deepening
 * Aspiration Windows (unsymmetrical)
 * Principal Variation Search
 * Quiescence Search
 * Null Move Pruning with R==3 and Verification
 * Futility Pruning
 * SEE Pruning
 * Late Move Reductions
 * Check Extensions
 * Singular Extensions (3.90)
 * Transposition Table
 * History Heuristic

Evaluation
=Namesake=
 * Material
 * Material Hash Table
 * Piece-Square Tables
 * Mobility (non-linear)
 * Pawn Structure
 * Pawn Hash Table
 * King Safety
 * Atlas by Alex Bell

=See also=
 * Astronomy
 * Geography
 * Mythology

=Forum Posts=

2005 ...

 * [|Atlas 2 Winboard Engine crashes in Arena GUI] by Marc Darius, Winboard Forum, April 20, 2005
 * [|Atlas 2.20 hash usage] by Graham Banks, Winboard Forum, August 27, 2006
 * [|Confused with Atlas 2.20- Help Appreciated] by George Speight, Winboard Forum, January 12, 2007

2010 ...

 * [|Atlas 3.60 Release] by Andrés Manzanares, CCC, November 18, 2013
 * [|Atlas 3.70em Release] by Andrés Manzanares, CCC, July 20, 2014

2015 ...

 * [|Atlas 3.80 release] by Andrés Manzanares, CCC, February 06, 2015
 * [|Atlas 3.90 release] by Andrés Manzanares, CCC, January 22, 2018
 * [|Atlas 3.91 (bugfix version)] by Andrés Manzanares, CCC, January 26, 2018

=External Links=

Chess Engine

 * [|Atlas - Home]
 * [|Atlas 3.80 64-bit] in CCRL 40/40

Misc
> media type="youtube" key="zqAb1avhXxM"
 * [|Atlas (computer) from Wikipedia]
 * [|Atlas (disambiguation) from Wikipedia]
 * [|Atlas from Wikipedia]
 * [|Atlas Mountains from Wikipedia]
 * [|Atlas (mythology) from Wikipedia]
 * [|Farnese Atlas from Wikipedia]
 * [|Atlas (rocket family) from Wikipedia]
 * [|Atlas (star) from Wikipedia]
 * [|Atlas (moon) from Wikipedia]
 * [|Colossochelys atlas from Wikipedia]
 * [|Atlas Jazz with Anna Givens] - [|I’ll Remember April], [|YouTube] Video

=References= =What links here?= include page="Atlas (ESP)" component="backlinks" limit="20"
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