Top 23 chess-engine Open-Source Projects

• Stockfish

  150 10,498 9.6 C++

  A free and strong UCI chess engine

  

Project mention: Manipulating the Internal World Model of a Chess Playing Language Model | news.ycombinator.com | 2024-03-25

The Stockfish program can be set to play at strength level 0-20. Estimates of the levels' Elo is provided here: https://github.com/official-stockfish/Stockfish/commit/a08b8...

• sunfish

  12 2,885 2.5 Python

  Sunfish: a Python Chess Engine in 111 lines of code

Project mention: funAndEasyToUse | /r/ProgrammerHumor | 2023-07-11

The NNUE version does but the non-NNUE version doesn't use numpy. That numpy import is for a neural network based evaluation functions. The base engine still plays at a strong human level and doesn't use numpy to do any of the heavy lifting. It does rely on itertools and collections though.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• lichobile

  38 1,970 2.7 TypeScript

  lichess.org mobile application

  

Project mention: State of development of the mobile app | /r/lichess | 2023-06-07

A few months ago, news broke that Lichess now has a full-time developer for the mobile app. How can I track the development status of the Lichess Mobile App? What features are planned, is there a roadmap? I can't see anything about it on the github page.

• maia-chess

  97 891 1.6 Python

  Maia is a human-like neural network chess engine trained on millions of human games.

  

Project mention: Grandmaster-Level Chess Without Search | news.ycombinator.com | 2024-02-09

This was studied with the Maia series of bots. See:

https://github.com/CSSLab/maia-chess

• irwin

  57 486 0.0 Python

  irwin - the protector of lichess from all chess players villainous

Project mention: How common is false banning in chess? | /r/chess | 2023-07-11

For Lichess, you can get some sort of idea from reading the code. If I remember correctly, there's some threshold for the site suspecting you of cheating based on a variety of simple metrics (accuracy, blurring, etc) and then it gets sent to machine learning tools to analyze (here is one of them, and here's another).

• Pleco

  1 349 2.6 Rust

  A Rust-based re-write of the Stockfish Chess Engine (by pleco-rs)

  

Project mention: I have years of experience in vulnerability analysis including several 0-day discovery, and this bug [buffer overflow] seems totally safe. | /r/programmingcirclejerk | 2023-05-09

/rj https://github.com/pleco-rs/Pleco

• stockfish

  3 256 0.0 Python

  Integrates the Stockfish chess engine with Python (by zhelyabuzhsky)

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• BlackWidow-Chess

  1 207 0.6 Java

  Chess

• berserk

  2 184 8.8 C

  UCI Chess Engine written in C (by jhonnold)

• Koivisto

  1 129 0.0 C++

  UCI Chess engine

• Walleye

  2 119 1.8 Rust

  A chess engine written from scratch in Rust ♞

• Gigantua

  3 103 0.0 C++

  Gigantua: Single Threaded - 2 Billion Moves/s Chess position enumerator

• liground

  3 94 3.1 Vue

  A free, open-source and modern Chess Variant Analysis GUI for the 21st century

  

• betafish

  4 91 2.6 JavaScript

  A chess engine and AI move finder written in Javascript. Beats Stockfish level 6 on Lichess.

• fastchess

  2 83 0.0 Python

  Predicts the best chess move with 27.5% accuracy by a single matrix multiplication

• xiphos

  2 71 0.0 C

  UCI chess engine

• Winter

  1 70 6.9 C++

  UCI Chess Engine (by rosenthj)

• StockNemo

  1 64 3.1 C#

  A C# Chess Engine Finding Good Moves.

• cozy-chess

  3 41 6.1 Rust

  A Chess and Chess960 move generation library written in Rust

Project mention: Help me find a perfect hash function and fill a hash table in compile time | /r/rust | 2023-07-03

If you'd like to reference something, my movegen crate cozy-chess does this. I also have a standalone reference implementation here as part of my magic bitboard article.

• lozza

  1 40 7.0 JavaScript

  A Javascript chess engine inspired by Fabien Letouzey's Fruit 2.1.

• MinimalChessEngine

  4 38 2.7 C#

  After watching The Queen's Gambit on Netflix I got interested in chess. I played a bit against computer programs and it made me curious about writing my own chess engine. This repository and a series of small videos I upload to Youtube after each milestone are documenting my progress.

• carp

  1 38 8.6 Rust

  Rust didactic UCI chess engine (by dede1751)

• littlewing

  1 37 4.7 Rust

  Chess engine written in Rust ♛

Project mention: Ask HN: What apps have you created for your own use? | news.ycombinator.com | 2023-12-12

More than I can count, but here are the big ones:

http://moros.cc - A hobby operating system, with a shell, an editor, a lisp interpreter, and many other little things

https://geodate.org - A lunisolar calendar with decimal time (centidays and dimidays)

https://github.com/vinc/geodate - An implementation of the calendar + time

https://github.com/vinc/geocal - A tool to visualize the calendar + time

https://github.com/vinc/littlewing - A chess engine written in Rust (and another one before that in C++)

https://vinc.cc/software/ - A more complete list, on my personal website

I'm good at scratching my own itches but less good at finding projects that could be useful for other people.

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chess-engine related posts

• Manipulating the Internal World Model of a Chess Playing Language Model
  4 projects | news.ycombinator.com | 25 Mar 2024
• Grandmaster-Level Chess Without Search
  1 project | news.ycombinator.com | 9 Feb 2024
• Chess-GPT's Internal World Model
  3 projects | news.ycombinator.com | 6 Jan 2024
• A chess terminal user interface implementation
  8 projects | news.ycombinator.com | 5 Dec 2023
• funAndEasyToUse
  4 projects | /r/ProgrammerHumor | 11 Jul 2023
• Help me find a perfect hash function and fill a hash table in compile time
  3 projects | /r/rust | 3 Jul 2023
• Wanna make your own chess engine in JAVA?
  1 project | /r/opensource | 27 Jun 2023
• A note from our sponsor - SaaSHub
  www.saashub.com | 26 Apr 2024

  SaaSHub helps you find the best software and product alternatives Learn more →

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