Combusken – UCI-compliant chess engine

Combusken is a UCI-compliant open source chess engine using Alpha-beta algorithm.

The software saw its first release in 2020.

Combusken is free and open source software.

Features include:

• Bitboards
• Plain Magic Bitboards
• Search:
  • Lazy SMP.
  • Iterative Deepening.
  • Aspiration Windows.
  • Alpha-Beta.
  • Transposition Table.
  • Selectivity:
    • Check Extensions.
    • Castling Extension.
    • Singular Extensions.
    • Late Move Reductions.
    • Null Move Pruning.
    • Futility Pruning.
    • Reverse Futility Pruning.
    • Late Move Pruning.
    • Static Exchange Evaluation Pruning.
  • Move Ordering:
    • Hash Move.
    • Internal Iterative Deepening.
    • MVV/LVA.
    • Static Exchange Evaluation.
    • Killer Heuristic.
    • History Heuristic.
    • Countermove Heuristic.
    • Follow Up History.
•  Evaluation:
  • Tapered Eval.
  • Material.
  • Bishop Pair.
  • Piece-Square Tables.
  • Mobility.
  • Outposts.
  • Rook on (Half) Open File.
  • Pawn-King Hash Table.
  • Pawn Structure:
    • Passed Pawn.
    • Isolated Pawn.
    • Doubled Pawn.
    • Backward Pawn.
    • Straggler.
    • Connected Pawns.
  • King Safety:
    • Pawn Shield.
    • Pawn Storm.
    • Attacking King Zone.
  • Hanging Pieces.
  • Tempo.
  • Automated Tuning using Gradient Descent.

Website: github.com/mhib/combusken
Support:
Developer: Marcin Henryk Bartkowiak
License: GNU General Public License v3.0

Combusken is written in Go and C. Learn Go with our recommended free books and free tutorials.

Return to Chess Engines

Explore Linux
	Best Free and Open Source Software - A huge collection of recommended free and open source software covering every major category.
	In-depth Linux Software Reviews - Detailed assessments of Linux software covering features, usability and overall quality.
	The Big List of Active Linux Distros - An extensive collection of actively developed Linux distributions.
	Open Source Alternatives - Alternatives to software and services from Google, Microsoft, Apple, Adobe, IBM, Autodesk, Oracle and others.
	Essential Linux System Tools - Indispensable utilities for monitoring, maintaining and managing Linux systems.
	Linux Productivity Tools - Useful utilities for improving productivity and streamlining everyday tasks.
	Alternatives to Popular CLI Tools - Modern alternatives to familiar command-line utilities supplied with Linux systems.
	Awesome Free Linux Game Tools - Tools, utilities and companion software that improve gaming on Linux.
	Machine Learning on Linux - Machine learning and deep learning software, self-hosted applications and practical tools.
	Saving Money with Linux - Practical ways to reduce electricity consumption and lower computing costs with Linux.
	Linux Candy - Fun, entertaining and sometimes delightfully quirky software from the lighter side of Linux.