Barbarossa

an UCI compliant open source chess engine by Nicu Ionita, first released in Fall 2013 as successor of Abulafia, both written in Haskell. It uses bitboards to represent the board, and magic bitboards to determine sliding piece attacks. Barbarossa applies an alpha-beta search utilizing a transposition table indexed by Zobrist keys, and uses the [|functional programming] concept of [|monad transformers] in [|continuation passing style] to control the search. Some evaluation parameters were tuned by Rémi Coulom's CLOP, and more recently by MMTO as introduced by Kunihito Hoki and Tomoyuki Kaneko in the domain of Shogi. || toc =See also=
 * Home * Engines * Barbarossa**
 * [[image:146px-Friedrich_I._Barbarossa.jpg width="180" link="http://commons.wikimedia.org/wiki/File:Friedrich_I._Barbarossa.jpg"]] ||~  || **Barbarossa**,
 * Barbarossa ||~  ||^   ||
 * Abulafia
 * Legend
 * Nobility

=Forum Posts=
 * [|Abulafia, chess, Haskell and some (new?) ideas] by Nicu Ionita, CCC, April 20, 2012
 * [|Barbarossa 0.1.0] by Nicu Ionita, CCC, November 24, 2013
 * [|New release of Barbarossa] by Nicu Ionita, CCC, February 22, 2015
 * [|Barbarossa 0.3.0 released] by Nicu Ionita, CCC, October 06, 2015
 * [|Barbarossa-0.4.0 release] by Nicu Ionita, CCC, December 20, 2016

=External Links=

Chess Engine

 * [|nionita/Barbarossa · GitHub]
 * [|Barbarossa] in CCRL 40/4

Misc

 * [|Barbarossa - Wiktionary]
 * [|Redbeard from Wikipedia]
 * [|Barbarossa from Wikipedia]
 * [|Frederick Barbarossa from Wikipedia]
 * [|King in the mountain from Wikipedia]
 * [|Barbarossa city from Wikipedia]
 * [|Barbarossa Monument from Wikipedia]
 * [|Oruç Reis from Wikipedia]
 * [|Hayreddin Barbarossa from Wikipedia]
 * [|Operation Barbarossa from Wikipedia]
 * [|The Man from Barbarossa - Wikipedia]
 * [|Barbarossa (board game) from Wikipedia] by [|Klaus Teuber]

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