Googleplex Starthinker

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Googleplex Starthinker, an UCI compatible open source chess engine by Jost Triller, written in C++, first released in December 2018. Googleplex Starthinker 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= In the scripts for Fit the Fourth of the The Hitchhiker's Guide to the Galaxy radio series, the first programmer asks Deep Thought if it is not "a greater analyst than the Googleplex Starthinker in the Seventh Galaxy of Light and Ingenuity which can calculate the trajectory of every single dust particle throughout a five-week Aldebaran sand blizzard?", which the great computer dismisses because he has already "contemplated the very vectors of the atoms in the Big Bang itself".

=Features=

Board Representation

 * Bitboards
 * Kindergarten Bitboards
 * Staged Move Generation

Search

 * Iterative Deepening
 * Aspiration Windows
 * Alpha-Beta Negamax
 * Principal Variation Search
 * Transposition Table
 * Move Ordering
 * Hash Move
 * MVV-LVA
 * Static Exchange Evaluation
 * Killer Heuristic
 * History Heuristic
 * Selectivity
 * Null Move Pruning
 * Late Move Reductions
 * Check Extensions
 * Futility Pruning
 * Quiescence Search
 * Delta Pruning

Evaluation

 * Piece-Square Tables
 * Mobility
 * Outposts
 * Pawn Structure
 * Isolated Pawn
 * Passed Pawn
 * King Safety

=See also=
 * Deep Thought
 * Nalwald
 * squared-chess

=Forum Posts=
 * "Googleplex Starthinker" chess engine by Jost Triller, CCC, December 02, 2018
 * GooglePlex Starthinker by Damir, CCC, August 17, 2019

=External Links=

Chess Engine

 * Tsoj Tsoj / Googleplex_Starthinker · GitLab
 * Googleplex Starthinker in CCRL 40/15

Misc

 * List of The Hitchhiker's Guide to the Galaxy characters - Wikipedia
 * Googleplex Starthinker | Hitchhikers | Fandom
 * Googleplex Starthinker
 * Googolplex from Wikipedia
 * Return to Forever - Hymn of the Seventh Galaxy, Montreux Jazz Festival, 2008, YouTube Video
 * Chick Corea, Al Di Meola, Stanley Clarke, Lenny White

=References= Up one Level