Strategy board game played on a 64-square chequered board between two players.
Chess has grown into a vast ecosystem of servers, software, media, and open-source tooling. This list gathers the most useful and actively maintained chess resources for players, coaches, developers, and fans.
- Play Online
- Mobile Apps
- Variants
- Puzzles and Tactics
- Openings
- Endgames
- Analysis Tools
- Training Platforms and Courses
- Coaching
- Books
- YouTube Channels
- Twitch Streamers
- Podcasts
- Chess in Education
- News and Magazines
- Blogs and Newsletters
- Tournaments and Broadcasts
- Governing Bodies
- Tournament Management Software
- Correspondence Chess
- Ratings and Statistics
- Engines
- Desktop GUIs
- Terminal Clients
- Databases and Opening Tools
- Libraries
- APIs and Data Sources
- Datasets
- File Formats and Standards
- Engine Testing
- Artificial Intelligence and Research
- Forums and Subreddits
- Chat and Social Media
- Reference and Wikis
- History
- Famous Games
- Problems and Studies
- Chess in Art and Fiction
- Equipment
- Collegiate and Clubs
- Lichess - Free, ad-free and open-source server with play, analysis, studies and broadcasts.
- Chess.com - Largest commercial platform with play, lessons, news and pro events.
- Internet Chess Club - Veteran subscription server relaunched as ICC 2.0 with a modern web client.
- Playchess - ChessBase's long-running server, now playable directly in the browser.
- Free Internet Chess Server - Volunteer-run free server and the oldest internet chess server still in operation.
- Free Chess Club - Modern web and mobile client for the FICS network.
- GameKnot - Long-standing correspondence community with teams and thematic tournaments.
- SparkChess - Casual play-vs-computer and multiplayer platform with unique AI personalities.
- Lichess4545 - Team-league hub running 45+45 classical and related Lichess-affiliated leagues.
- Lichess Mobile - Official open-source Lichess client for iOS and Android.
- Chess.com Mobile - Official Chess.com client for play, puzzles and lessons.
- DroidFish - Feature-rich Android GUI built around Stockfish.
- SmallFish Chess for Stockfish - iOS Stockfish client recommended by the Stockfish team, with the latest NNUE networks built in.
- Chess Tempo - Tactics training, rated puzzles and repertoire trainer on mobile.
- Take Take Take - Magnus Carlsen's chess platform combining live tournament viewing, play and AI coaching on iOS and Android.
- Chess960 on Lichess - Play and study Fischer Random with a starting-position generator.
- Chess960 on Chess.com - Fischer Random lobby including Double Fischer Random events.
- Three-check - Win by delivering check three times.
- Atomic Chess - Captures detonate the surrounding squares.
- Antichess - Lose all your pieces first to win the game.
- Crazyhouse - Drop captured enemy pieces back onto the board as your own.
- King of the Hill - Walk your king safely to one of the four central squares.
- Racing Kings - Race your king to the eighth rank with checks forbidden.
- Horde - Black defends against an army of 36 white pawns.
- Fog of War - Dark Chess where only squares your pieces attack are visible.
- Duck Chess - Each turn ends by placing a duck that blocks the next move.
- Monster Chess - White plays four pawns and a king but moves twice per turn.
- Bughouse Database - Archive of bughouse games played on FICS.
- PyChess Variants - Open-source server for 30+ variants including Shogi and Xiangqi cousins.
- The Chess Variant Pages - Encyclopedia of thousands of chess-family games since 1995.
- Lichess Puzzles - Free puzzles with Puzzle Storm, Racer and Streak modes.
- Chess.com Puzzles - Rated tactics with Puzzle Rush and Puzzle Battle.
- Chesstempo - 350k+ tactics with spaced repetition, endgames and opening drills.
- ChessPuzzle.net - 200k+ themed puzzles organized into a skill tree with guided courses.
- Listudy - Free spaced-repetition trainer for openings, tactics and blindfold play.
- Blitz Tactics - Fast-paced tactics drills focused on pattern recognition speed.
- Aimchess - AI analytics that generate custom exercises from your own games.
- Chess.com Vision - Square-coordinate and move-speed trainer for board-vision improvement.
- WTHarvey - Free archive of more than 20,000 tactical puzzles drawn from GM games.
- ChessTactics.org - Long-standing site offering thematic tactics courses and problem sets.
- Lichess Opening Explorer - Free explorer over master games, Lichess games and player profiles.
- Chess.com Opening Explorer - Web explorer over Chess.com games and curated master databases.
- 365Chess Opening Explorer - Free opening explorer searchable by ECO code and position.
- Chessly - GothamChess opening-focused training with adaptive coursework.
- Chessbook - Repertoire builder with spaced repetition and game-review integration.
- Chessreps - Minimal spaced-repetition opening trainer for rapid repertoire building.
- OpeningTree - Visualizes your own Chess.com or Lichess games as an opening tree.
- ChessAtlas - Spaced-repetition trainer for memorizing and maintaining your opening repertoire.
- Opening Scanner - Client-side tool that reveals any Lichess or Chess.com player's actual repertoire with ECO classification and win rates.
- Lichess Endgame Practice - Free interactive endgame drills against the engine.
- Chess.com Endgames - Themed endgame trainer with progressive difficulty.
- Chesstempo Endgames - Rated endgame trainer using tablebase-perfect positions.
- Chess.com Game Review - Automated post-game report scoring accuracy, key moments and phase-by-phase play.
- Chessify - Rentable cloud Stockfish and Lc0 at multi-GN/s speeds with ChessBase and UCI integration.
- DecodeChess - Natural-language engine explanations that translate Stockfish lines into plain text.
- NextChessMove - Web Stockfish calculator for quick best-move lookups from any FEN.
- Chessvision.ai - Browser extension and API that OCRs chess diagrams from images, PDFs and video frames.
- ChessMonitor - Personal chess dashboard unifying Chess.com, Lichess and PGN games with opening trees, mistake reports and performance analytics.
- ChessBase Reader - Free official viewer for ChessBase's CBH, CBV and PGN files.
- Chessable - Spaced-repetition MoveTrainer platform with courses from top grandmasters, now part of Chess.com.
- ChessMood - GM-taught course library with structured opening, middlegame and endgame paths led by Avetik Grigoryan.
- Chess.com Lessons - Structured video library covering openings, tactics, strategy and endgames.
- ICC Videos - Archive of lectures by Seirawan, Dlugy, Ashley and others.
- Noctie - Human-like training partner powered by a neural engine calibrated to play at any rating from beginner to super-GM.
- Killer Chess Training - Simon Williams and Daniel King's subscription site with live sessions.
- ChessDojo - Kraai, Kavutskiy and Pruess's rating-banded structured training program.
- Chessiverse - John Bartholomew's platform with personality-driven bots for realistic practice.
- Dark Squares - Progressive blindfold chess trainer with seven levels from board basics to full games.
- Lichess Study - Free collaborative tool for annotated studies and interactive lessons.
- Dan Heisman Chess - NM Dan Heisman's coaching site and home of the long-running Novice Nook improvement columns.
- Steps Method - Dutch Stappenmethode, the most widely used scholastic chess curriculum across Europe.
- Chessdriller - Open-source spaced-repetition opening trainer; free self-hosted alternative to Chessable's review feature.
- Disco Chess - Woodpecker-method trainer for tactics, openings and your own games with cycle tracking.
- Chessbuddy - Tactics trainer with adaptive per-theme difficulty and configurable training sessions.
- Chess.com Coaches - Searchable directory of verified coaches available for lessons on Chess.com, filterable by rating, language and specialty.
- Lichess Coaches - Free directory of FIDE-titled and National Master coaches on Lichess.
- IchessU - Online coaching platform with live lessons for kids and adults from beginner to advanced level.
- My System - Aron Nimzowitsch's foundational treatise on hypermodern positional play.
- Zurich International Chess Tournament 1953 - David Bronstein's deeply annotated games, widely called the best tournament book ever written.
- My 60 Memorable Games - Bobby Fischer's self-annotated masterwork of ruthless honesty and clarity.
- Logical Chess Move by Move - Irving Chernev's classic explaining every move for improving players.
- The Art of Attack in Chess - Vladimir Vukovic's timeless guide to the art of kingside assault.
- The Life and Games of Mikhail Tal - Autobiography and brilliancies from the Magician of Riga.
- Silman's Complete Endgame Course - Endgames taught by rating level from beginner to master.
- How to Reassess Your Chess - Jeremy Silman's imbalance-based method for positional thinking.
- Dvoretsky's Endgame Manual - Mark Dvoretsky's definitive reference on serious endgame study.
- 100 Endgames You Must Know - Jesús de la Villa's essential collection of must-know theoretical endings.
- Fundamental Chess Endings - Karsten Müller and Frank Lamprecht's comprehensive single-volume endgame compendium.
- Think Like a Grandmaster - Alexander Kotov on candidate moves and the tree-of-analysis method.
- Attacking Manual - Jacob Aagaard's modern attacking framework in two volumes.
- Grandmaster Preparation: Positional Play - The positional volume of Aagaard's influential training series.
- Bobby Fischer Teaches Chess - Classic programmed-learning introduction to basic tactics.
- Chess Fundamentals - José Raúl Capablanca's timeless primer on sound chess thinking.
- Everyone's First Chess Workbook - Peter Giannatos's 738-puzzle starter used widely by coaches.
- Build Up Your Chess with Artur Yusupov - Artur Yusupov's award-winning nine-volume training ladder from club level to master.
- Quality Chess catalog - Publisher of the acclaimed Grandmaster Preparation series and elite training books.
- New In Chess - Dutch publisher behind the flagship magazine and many top instructional titles.
- Project Gutenberg Chess Books - Public-domain chess literature, including classics by Staunton, Morphy and Lasker.
- GothamChess - Levy Rozman's popular channel with top-event recaps and beginner guides.
- GMHikaru - Hikaru Nakamura's main channel with analysis, speedruns and tournament vlogs.
- agadmator's Chess Channel - Daily classic and current game narrations from Antonio Radić.
- Daniel Naroditsky - Extensive speedrun and educational archive, a lasting learning resource.
- Eric Rosen - Instructive, calm speedruns, opening traps and stream highlights.
- ChessNetwork - NM Jerry's long-running analysis channel with engine-vs-engine and classic commentary.
- John Bartholomew - Creator of the "Climbing the Rating Ladder" series and Chessiverse.
- Saint Louis Chess Club - Weekly GM lectures, US Championship coverage and Finegold classes.
- ChessBase India - Sagar Shah's prolific channel covering the Indian chess boom.
- GMBenjaminFinegold - Ben Finegold's Roswell lectures and Q&A streams.
- Anna Cramling - Travel-and-chess vlogs, park games and tournament diaries.
- GingerGM - Simon Williams's attacking chess, Dutch Defense and entertaining GM content.
- PowerPlayChess - GM Daniel King's analysis of top games and FIDE events.
- Chess.com - Official channel with event coverage, PogChamps and Puzzle Rush shows.
- Take Take Take - Magnus Carlsen's media brand covering Titled Tuesday and elite events.
- ChessCoach Andras - IM Andras Toth's no-nonsense improvement lessons for club players.
- BotezLive - Alexandra and Andrea Botez's channel with collabs and in-person chess.
- ChessVibes - Nelson Lopez's clear, instructive videos focused on practical improvement.
- Hanging Pawns - Stjepan Tomić's long-running improvement journey channel with opening surveys and rating-climb logs.
- Dojo Talks - The ChessDojo team's training podcast and live review streams.
- IM Alex Banzea - Punchy opening-focused videos for club players and improvers.
- Chessbrah - Aman Hambleton and Eric Hansen's channel known for the Building Habits and speedrun series.
- Anna Rudolf - IM Anna Rudolf's analysis, vlogs and event commentary.
- Tania Sachdev - IM Tania Sachdev's commentary diaries from Norway Chess, Freestyle and the Champions Chess Tour.
- ChessMood YouTube - GM Avetik Grigoryan's channel tied to the ChessMood course platform.
- Nemo Zhou - WGM Qiyu Zhou's YouTube home for stream highlights and travel chess.
- Magnus Carlsen - The world champion's personal channel with tournament recaps and Take Take Take segments.
- Anish Giri - Top-ten GM Anish Giri's channel covering elite events and opening theory.
- Jan Gustafsson - GM Jan Gustafsson's opening clinics and top-event commentary.
- Chessexplained - IM Christof Sielecki's deep opening and improvement courses.
- Kingscrusher - CM Tryfon Gavriel's long-running channel covering classic games and Leela deep dives.
- Blitzstream - Kevin Bordi's channel and the largest French-language chess presence online.
- Julien Song - IM Julien Song's French-language channel with tournament tours and improvement series.
- The Big Greek - IM Georgios Souleidis's channel, the largest German-language chess channel.
- Rey Enigma - Masked Spanish IM's short-form street chess challenges and viral duels.
- Samay Raina Chess - Indian comedian-streamer whose chess tournaments helped spark the India chess boom.
- GMHikaru - Hikaru Nakamura's flagship stream for bullet, Titled Tuesday and top-event reactions.
- BotezLive - The Botez sisters' variety chess stream with a large and active community.
- GothamChess - Levy Rozman's Twitch home for live recaps and viewer games.
- imrosen - Eric Rosen's calm, teaching-oriented Lichess and Chess.com sessions.
- akaNemsko - WGM Qiyu Zhou's long-running chess-and-variety stream.
- anna_chess - WFM Anna Cramling's stream featuring tournaments and viewer games.
- Chess - Official Twitch home of PogChamps and the Speed Chess Championship.
- ChessBase India - Sagar Shah's channel, the most-watched chess stream on Twitch by all-time hours.
- itsBenAndKaren - Ben Finegold's lectures and Q&A broadcasts from Roswell.
- ChessDojo - ChessDojo's live training, game reviews and podcast recordings.
- Blitzstream - Kevin Bordi's flagship French chess stream with daily blitz sessions and event commentary.
- Julien Song - IM Julien Song's Twitch home for French-language live games and improvement content.
- The Perpetual Chess Podcast - Ben Johnson's weekly interviews with top players, trainers and improvers.
- C-Squared Podcast - Fabiano Caruana and Cristian Chirila's insider chat on elite chess news.
- Dojo Talks - Kraai, Kavutskiy and Pruess on training, news and the Dojo curriculum.
- New In Chess Podcast - Official NIC show featuring interviews from the magazine's editors.
- Chess Journeys - Kevin Scull's interview podcast focused on adult-improver stories and training methods.
- ChessKid - Safe kids' platform from Chess.com with lessons, puzzles and youth championships.
- No Stress Chess - Card-based beginner game that teaches piece movement.
- Chess in Education - FIDE/ISCF resource hub for scholastic chess with research, news and the annual CiE conference.
- National Scholastic Chess Foundation - US non-profit providing chess instruction and tournaments for students since 1990.
- Chess in the Schools - NYC-based program bringing free chess instruction to underserved public schools.
- Chess.com News - Daily tournament coverage, interviews and features.
- ChessBase News - Daily news, analysis and training articles from the ChessBase team.
- Chessdom - Independent news site with extensive live event coverage.
- The Week in Chess - Mark Crowther's weekly PGN and news digest, running since 1994.
- Chess Life Online - US Chess Federation's official news and tournament reports.
- New In Chess Magazine - Premier international chess magazine, eight issues a year in print and digital.
- British Chess Magazine - World's oldest continuously published chess journal, founded 1881.
- American Chess Magazine - Bi-monthly US magazine edited by Josip Asik.
- Kingpin Chess Magazine - Long-running satirical chess magazine by Jonathan Manley.
- ChessBase India News - Leading source for Indian chess news and coverage.
- ChessTech News - Independent weekly newsletter covering chess and technology.
- ChessGoals Blog - Matt Jensen's data-driven posts on rating benchmarks and improvement plans.
- Next Level Chess - GM Noël Studer's newsletter and essays on improvement and mindset.
- Lichess Blog - Official blog covering platform updates, events and open-source development.
- Chessable Blog - Learning-science articles and course spotlights from the Chessable team.
- Perpetual Chess Blog - Show notes, book recaps and episode archives from Ben Johnson.
- Worldchess - FIDE's official broadcast partner for the World Championship cycle.
- Grand Chess Tour - Annual circuit of elite super-tournaments including the Sinquefield Cup.
- Tata Steel Chess - Official site of the prestigious Wijk aan Zee tournament.
- Norway Chess - Official site of the annual Stavanger super-tournament.
- Lichess Broadcasts - Free live-event relay with per-move analysis boards.
- chess-results.com - Public archive of Swiss-system tournament results from club events up to Olympiads.
- Chessdom Calendar - Global calendar of upcoming classical, rapid and junior tournaments.
- TCEC - Top Chess Engine Championship, the flagship long-time-control engine league.
- Computer Chess Championship - Chess.com's 24/7 engine tournament with live commentary.
- Freestyle Chess Grand Slam Tour - Chess960 tour co-founded by Magnus Carlsen and Kasparov Chess.
- Chess.com Events - Hub for Champions Chess Tour, Global Championship and Speed Chess events.
- FIDE - International chess federation with official ratings, regulations and event calendars.
- US Chess Federation - Governing body for chess in the United States.
- English Chess Federation - Governing body for chess in England.
- European Chess Union - Continental federation for European chess.
- Chess Federation of Canada - Governing body for chess in Canada.
- All India Chess Federation - Governing body for chess in India.
- Deutscher Schachbund - German chess federation.
- Fédération Française des Échecs - French chess federation.
- IBCA - International Braille Chess Association, the FIDE-affiliated body for blind and visually impaired players.
- Swiss-Manager - FIDE-approved pairing program used across more than a million tournaments and paired with chess-results.com.
- SwissSys - Windows tournament director software for Swiss, round-robin and team Swiss events under USCF and FIDE rules.
- Vega Chess - Cross-platform pairing engine for Swiss, round-robin and team events used across Europe and South America.
- Tornelo - Online tournament platform supporting pairings, arbiter tools and live broadcast in a single web app.
- ICCF - International Correspondence Chess Federation and the official web server for title-eligible correspondence events.
- LSS - Free correspondence chess server supporting classical postal-style time controls and themed events.
- SchemingMind - Subscription correspondence chess club with thematic tournaments and a long-running community.
- ChessWorld - Online correspondence-chess community with team matches and thematic events.
- FIDE Ratings - Official FIDE rating lists for classical, rapid and blitz.
- 2700chess - Live unofficial top-player ratings updated after every reported game.
- Chessmetrics - Jeff Sonas's archived historical-rating system covering games back to 1843.
- ChessGoals - Rating comparisons across Chess.com, Lichess and FIDE plus improvement resources.
- Chess.com Ratings - Live top-100 lists for classical, rapid, blitz and bullet.
- Stockfish - Strongest open-source UCI engine with NNUE evaluation.
- Leela Chess Zero - Neural-network engine inspired by AlphaZero and the reference GPU engine.
- Torch - Top-ranked closed-source engine by an all-star team and the engine powering Chess.com analysis.
- Obsidian - Top-tier C++ NNUE engine with networks trained from Leela data.
- PlentyChess - Top-ranked NNUE engine trained on billions of self-generated positions.
- Berserk - Strong C UCI engine by Jay Honnold, actively developed.
- Caissa - C++ NNUE engine trained from self-play to a very high rating.
- Viridithas - One of the strongest chess engines written in Rust, with NNUE support.
- Stormphrax - C++ NNUE engine trained from zero knowledge for standard and Chess960.
- Alexandria - C++ NNUE engine consistently found in the CCRL top ten.
- RubiChess - Mature C++ engine with frequent builds and TCEC participation.
- Seer - Pioneering NNUE engine with self-taught networks.
- Koivisto - Collaboratively developed NNUE engine with modern search techniques.
- Ethereal - Classical-lineage engine by Andrew Grant, used as a base for many modern engines.
- Igel - C/C++ UCI engine with NNUE evaluation and distinct search ideas.
- Minic - Actively maintained single-header C++ UCI engine.
- Fairy-Stockfish - Variant-capable Stockfish fork supporting 70+ chess variants.
- Sunfish - Python chess engine in 111 lines; a landmark in minimal, readable engine design widely used for teaching.
- GNU Chess - GNU Project's classical chess engine with UCI support since version 6.1.
- Dragon by Komodo - Strong commercial engine, free for non-commercial use.
- HIARCS - Veteran commercial engine with a focus on positional play.
- Fritz - ChessBase's classic commercial engine and analysis companion.
- Cute Chess - Cross-platform GUI and command-line tournament manager, a standard for engine testing.
- En Croissant - Modern open-source analysis suite with databases, engines and an opening explorer.
- BanksiaGUI - Free cross-platform GUI tailored for engine analysis and tournaments.
- Nibbler - Electron real-time analysis GUI purpose-built for Lc0 but compatible with any UCI engine.
- Scid vs. PC - Mature open-source database and analysis GUI forked from Scid.
- ChessX - Qt-based cross-platform PGN database and analysis GUI.
- Arena - Long-running free Windows and Linux GUI supporting UCI and WinBoard engines.
- XBoard - GNU Project's reference GUI, still maintained for Unix, Windows and macOS.
- ChessBase - Commercial industry-standard database and analysis suite used by top professionals.
- Lucas Chess R - Free Windows and Linux training GUI with tactics, tutors and built-in engines.
- cli-chess - Highly customizable terminal client for Lichess and offline play against Fairy-Stockfish.
- chess-tui - Rust-based TUI for local play, any UCI engine and Lichess.
- uchess - Themeable terminal UCI client supporting human, computer and engine-vs-engine play.
- c-chess-cli - Minimal C command-line interface for running UCI engine matches.
- Lichess Opening Database - Built-in access to millions of master and Lichess games for free.
- ChessBase Online Database - Free eight-million-game online reference database backed by ChessBase.
- Lumbra's Gigabase - Free 10M+ game over-the-board database updated regularly.
- Chessgames.com - Community-driven database with discussion on nearly every game.
- 365Chess - Free searchable game database with opening explorer.
- ChessTempo Game Database - Free game database with opening explorer and per-player repertoire trees.
- ChessBase Mega Database - Commercial reference database of more than eleven million games with professional annotations.
- Scid - Shane's Chess Information Database and the
.si4family of database tools. - Syzygy Tablebases - Reference implementation and tables for 6- and 7-piece endgame tablebases.
- ChessBase Opening Encyclopaedia - Annual commercial opening reference released by ChessBase.
- python-chess - Pure-Python chess library with move generation, PGN/FEN parsing and engine communication.
- berserk - Official Python client for the Lichess API with full OAuth and bot support.
- python-chessdotcom - Python wrapper around the Chess.com Published-Data API.
- stockfish (Python) - Lightweight Python wrapper for controlling a local Stockfish binary via UCI.
- nnue-pytorch - Official Stockfish NNUE trainer in PyTorch with data loaders and conversion tools.
- chess.js - Headless JavaScript chess library for move generation, validation and PGN/FEN handling.
- chessground - Framework-agnostic chess board UI used by Lichess.
- chessops - TypeScript chess library by Lichess covering rules, FEN/PGN and variants.
- react-chessboard - Customizable React chessboard component with drag and arrow drawing.
- chessboard.js - Standalone JavaScript chessboard widget for rendering positions.
- chessboard2 - Zero-dependency successor to chessboard.js with drag and arrow support.
- lichess-bot - Python bridge between the Lichess Bot API and any UCI or XBoard engine.
- chess-web-api - Chess.com Published-Data API wrapper for Node.js with a priority queue.
- shakmaty - Fast Rust chess library with legal move generation and variant support.
- Pleco - Rust chess engine and library inspired by Stockfish, usable as a crate.
- chess (Rust) - Rust chess move-generation library focused on speed via magic bitboards.
- chess-library - Header-only modern C++ chess library with fast legal move generation.
- libchess - C++17 chess library for engine authors with bitboard representation.
- chesslib (Java) - Java chess library with move generation, PGN handling and FEN parsing.
- scalachess - Immutable functional Scala chess API powering Lichess and many variants.
- Rudzoft.ChessLib - High-performance .NET chess library with bitboards, Zobrist hashing and perft.
- Geras1mleo/Chess - Modern C# chess library with PGN parsing, move validation and game state tracking.
- chesskit-swift - Swift package for chess rules, PGN, FEN and engine communication on Apple platforms.
- chesskit-engine - Swift package bridging UCI engines like Stockfish into iOS and macOS apps.
- kortirso/chess - Elixir package for chess move validation and game logic.
- chessIO - Fast Haskell chess move generator with a console UCI frontend.
- Barbarossa - Full UCI chess engine written in pure Haskell.
- Lichess API - Free public REST and streaming API with OAuth, covering games, tournaments, puzzles and bot play.
- Chess.com Published-Data API - Read-only JSON API exposing player profiles, game archives, clubs and tournaments.
- Syzygy Tablebase API - Niklas Fiekas's hosted 7-piece endgame tablebase lookup with JSON responses.
- Lichess Open Database - Monthly PGN dumps of every rated Lichess game, freely licensed as CC0.
- Lichess Puzzle Database - Millions of tactical puzzles with themes, ratings and solution lines as CSV.
- Lichess Evaluation Database - Cloud Stockfish evaluations for millions of analyzed positions.
- PGN Mentor - Curated PGN collections sorted by player, opening and event.
- Caissabase - Free 5M+ game Scid database updated quarterly from TWIC and other sources.
- FICS Games Database - Archive of games played on the Free Internet Chess Server.
- Leela Chess Zero Training Data - Public self-play training data and network weights.
- Lichess Elite Database - Curated subset of Lichess games limited to players rated 2400 and above.
- Beginchess PGN Downloads - Free PGN files extracted from dozens of classic chess books and game collections.
- lichess-org/chess-openings - Canonical open-source ECO opening dataset used by many tools.
- PGN Specification - Official Portable Game Notation standard including tag pairs, SAN and NAGs.
- Forsyth-Edwards Notation - FEN and EPD specs for exchanging chess positions, with EPD extensions for test suites.
- UCI Protocol - Universal Chess Interface spec maintained by Niklas Fiekas, used by Stockfish and Leela.
- XBoard CECP Protocol - GNU Chess Engine Communication Protocol, the older alternative to UCI.
- Polyglot Book Format - Chess Programming Wiki reference for the binary
.binopening-book format supported by most engines. - pgn-extract - Long-maintained CLI for filtering, converting and fixing PGN files.
- CCRL - Computer Chess Rating Lists covering 40/15, 40/4 and blitz across thousands of engines.
- CEGT - Chess Engines Grand Tournament rating lists at multiple time controls.
- SPCC Rating List - Stefan Pohl Computer Chess rating lists focused on top engines.
- OpenBench - Distributed SPRT testing framework used by dozens of engine projects.
- fastchess - High-performance engine-match runner, successor to fast-chess.
- Fishtest - Distributed SPRT testing framework behind Stockfish development.
- AlphaZero Paper - DeepMind's original paper on reinforcement-learning chess play from self-play alone.
- MuZero Paper - DeepMind's follow-up that learns the game model alongside the policy.
- Stockfish NNUE Documentation - In-depth explanation of the NNUE architecture used in modern Stockfish.
- Maia Chess - Human-like neural chess engine from the UofT CSSLab that models skill by rating band.
- Maia-2 - Unified follow-up capturing human style coherently across skill levels.
- ICGA Journal - Peer-reviewed journal of the International Computer Games Association.
- r/chess - Main Reddit community for news, analysis and discussion of all things chess.
- r/chessbeginners - Friendly subreddit dedicated to new players seeking advice and study plans.
- r/AnarchyChess - Legendary meme community where en passant is mandatory.
- r/chesspuzzles - Daily tactics, studies and composed problems submitted by solvers.
- r/TournamentChess - Serious discussion focused on over-the-board competition and rated play.
- Chess.com Forums - Largest online chess community with thousands of active threads daily.
- Lichess Forum - Lichess's official forum covering play, variants and feedback.
- ChessPub Forum - Longstanding opening-theory forum tied to the ChessPublishing.com archives.
- TalkChess - Computer-chess discussion board where engine authors announce releases.
- Chess Stack Exchange - Q&A site for rules, theory, engine and composition questions.
- ChessDojo Discord - Community hub for the Kraai, Kavutskiy and Pruess training program.
- Chess.com Discord - Official Chess.com server for events, streamer chat and support.
- Lichess Discord - Official Lichess chat for features, variants and volunteer development.
- PenguinGm1 Discord - GM Andrew Tang's community server for bullet chess and variety play.
- Pawngrubber's Discord - Improvement-focused community led by a Chess.com employee with weekly events.
- Lichess on Bluesky - Official Lichess announcements on the Bluesky network.
- Chess.com on X - Official Chess.com account for tournaments, news and promotions.
- FIDE on X - International Chess Federation's announcements and world events.
- Chess Programming Wiki - Definitive community reference for engine authors, with thousands of articles on search, eval and history.
- Wikipedia Chess Portal - Curated gateway to biographies, history and game articles on Wikipedia.
- Liquipedia Chess - Esports-style wiki covering online events, PogChamps and tour coverage.
- FIDE Laws of Chess - Official FIDE Handbook chapter defining the rules of chess for rated play.
- FIDE Arbiters' Manual - FIDE Arbiters' Commission reference covering rulings, tiebreaks and rapid-chess penalties.
- Edward Winter's Chess Notes - Scholarly chess-history column by the field's foremost archivist.
- World Chess Championship history - Comprehensive overview of every classical title match from Steinitz onward.
- Fischer vs. Spassky 1972 - Annotated collection of all 21 games from the Match of the Century.
- Kasparov vs. Karpov matches - Full archive of the five world-title matches between the K's.
- World Chess Hall of Fame - Saint Louis museum documenting history, champions and artifacts.
- Staunton Chess Set History - Origin and design of the tournament-standard chess set.
- Chessgames.com Game Collections - Community-curated hub of thousands of thematic collections, from immortals to world-championship matches.
- 10 Greatest Chess Games Ever Played - Long-standing Chessgames.com community pick of the most celebrated games in history.
- Wikipedia: List of chess games - Comprehensive index of historically significant games with annotations and context.
- The Best Chess Games of All Time - Chess.com staff and contributors' ranked list of the greatest games.
- Top 15 Chess Games Before 1900 - Sam Copeland's deep historical survey with 130+ honorable mentions.
- YACPDB - Yet Another Chess Problem Database with more than half a million composed problems.
- ARVES - International endgame-study association publishing EG magazine.
- Harold van der Heijden Endgame Database - The standard 100,000+ endgame-study reference collection.
- SuperProblem - Russian and English composition e-magazine with regular tourneys.
- Meson Chess Problem Database - Brian Stephenson's searchable problem archive.
- WFCC - World Federation for Chess Composition, governing body of problem chess.
- Chess Composers - Biographical blog cataloging composers by date of birth.
- The Queen's Gambit - Walter Tevis's 1983 novel adapted into the Netflix series that fueled the modern chess boom.
- Pawn Sacrifice - Biopic of Bobby Fischer's 1972 title run starring Tobey Maguire.
- Searching for Bobby Fischer - Award-winning 1993 film about the prodigy Josh Waitzkin.
- Magnus - Intimate 2016 portrait of Magnus Carlsen's rise to the world title.
- The Defense - Vladimir Nabokov's 1930 novel about an obsessed grandmaster.
- The Flanders Panel - Arturo Pérez-Reverte's chess-themed mystery novel.
- Through the Looking-Glass - Lewis Carroll's novel structured entirely as a chess game.
- House of Staunton - Premium tournament and collector chess sets, boards and clocks.
- Chess House - Long-running US retailer for equipment, computers and books.
- American Chess Equipment - Supplier of tournament-grade plastic sets and vinyl boards.
- DGT - Makers of the official FIDE chess clocks and electronic boards.
- ChessUp - Smart board that teaches beginners with LED move highlights.
- Chessnut - Electronic boards with full piece recognition for online play.
- Millennium Chess - German maker of ChessGenius and The King dedicated chess computers.
- USCF Sales - Official US Chess Federation store for tournament-legal equipment.
- Official Staunton - UK-based maker of historical-reproduction Staunton sets.
- Saint Louis Chess Club - World-class club and tournament venue hosting the Sinquefield Cup.
- US Chess College Chess - Hub for US collegiate events, rankings and the Pan-American championship.
- UT Dallas Chess - Top-ranked US collegiate program with grandmaster scholarships.
- Webster University SPICE - Susan Polgar Institute and multiple-time collegiate Final Four champion.
- Saint Louis University Chess - Partnership with STLCC that has won multiple national titles.
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