Hactar

Home * Engines * Hactar

Hactar, (hactar) a simple UCI compatible open source chess engine by Jost Triller, written in Rust, first released in January 2018 under the MIT license. Like its successors squared-chess, Googleplex Starthinker and Nalwald, hactar is a bitboard engine and generates sliding piece attacks Kindergarten like, by looking up four pre-calculated line attack arrays, 32-Kbyte each, indexed by square and inner six bit line occupancy .

=Etymology= Hactar appears in Life, the Universe and Everything, the third book in the five-volume Hitchhiker's Guide to the Galaxy by Douglas Adams. Flexible and imaginative, Hactar was the first computer whose individual components reflected the pattern of the whole. Hactar is assembled and programmed by the Silastic Armourfiends, who then order him to assemble an "Ultimate Weapon." Hactar, receiving no other guidance from the Armourfiends, takes the request literally and builds a supernova bomb which would connect every major sun in the universe through hyperspace, thus causing every star to go supernova. Deciding that he could find no circumstance where such a bomb would be justified, Hactar builds a small defect into it. After discovering the defect, the Armourfiends pulverize Hactar ...

=Features=

Board Representation

 * Bitboards
 * Kindergarten Bitboards

Search

 * Iterative Deepening
 * Alpha-Beta Negamax
 * Transposition Table
 * Move Ordering
 * Hash Move
 * MVV-LVA
 * Selectivity
 * Late Move Reductions
 * Quiescence Search

Evaluation

 * Material
 * Mobility
 * Pawn Structure
 * Isolated Pawn
 * Passed Pawn
 * King Safety

Misc

 * Perft

=See also=
 * squared-chess
 * Googleplex Starthinker
 * Nalwald

=Forum Posts=
 * A new chess engine: hactar by Jost Triller, CCC, January 13, 2018

=External Links=

Chess Engine

 * GitHub - tsoj/hactar: hactar is a simple chessengine written in rust
 * Hactar 0.9.0 64-bit in CCRL Blitz

Misc

 * List of The Hitchhiker's Guide to the Galaxy characters - Wikipedia
 * Hactar - The Hitchhiker's Guide to the Galaxy
 * Hactar | Hitchhikers | Fandom

=References= Up one Level