Clover

Home * Engines * Clover



Clover, an UCI compliant open source chess engine by Luca Metehau, written in C++. Clover was first released in April 2021, hosted on GitHub. In January 2022, Clover 3.0 was released featuring NNUE instead of hand crafted evaluation.

=Features=

Board Representation

 * Bitboards
 * Magic Bitboards

Search

 * Lazy SMP
 * Iterative Deepening
 * Aspiration Windows
 * Principal Variation Search
 * Shared Hash Table
 * Move Ordering
 * Hash Move
 * Captures by MVV/LVA
 * Static Exchange Evaluation
 * Killer Heuristic
 * History Heuristic
 * Countermove Heuristic
 * Selectivity
 * Mate Distance Pruning
 * Razoring
 * Static Null Move Pruning
 * Adaptive Null Move Pruning
 * ProbCut
 * Futility Pruning
 * Late Move Pruning
 * SEE Pruning
 * Singular Extensions
 * Check Extensions
 * Late Move Reductions
 * Quiescence Search

Evaluation

 * NNUE (Clover 3.0)
 * Tapered Eval
 * Material
 * Bishop Pair
 * Piece-Square Tables
 * Mobility
 * Trapped Pieces
 * Rooks on (Semi) Open Files
 * Outposts
 * Pawn Structure
 * Backward Pawn
 * Doubled Pawn
 * Isolated Pawn
 * Connected Pawns
 * Passed Pawn
 * King Safety
 * Attacking King Zone
 * Pawn Shelter
 * Tempo

Misc

 * Texel's Tuning Method
 * Syzygy Bases via Fathom
 * Perft

=Forum Posts=
 * New engine: Clover by Luca Metehau, CCC, April 23, 2021
 * New engine: Clover by Luca Metehau, CCC, April 23, 2021
 * Re: New engine: Clover by Luca Metehau, CCC, January 23, 2022
 * Clover 3.1 by Luca Metehau, CCC, March 26, 2022

=External Links=

Chess Engine

 * GitHub - lucametehau / CloverEngine

Misc

 * clover - Wiktionary
 * Clover from Wikipedia
 * Clover (disambiguation) from Wikipedia
 * Tommy James and the Shondells - Crimson and Clover (1968), YouTube Video

=References= Up one level