• Chess Database with 31 million games,
    world biggest collection of chess games

  • Over-the-board database with 10 million,
    Correspondance with 2 million human games.

  • Download easily now,
    great database for every chess players.

  • Watch latest podcast episodes,
    on your favourite streaming platforms .

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Chess Database - Pay what You really need

Supporting the Cause

Introducing our annual subscription program, featuring monthly chess database updates for an enhanced chess experience. Please note that this is a digital download product. Upon sign-up, kindly read and accept our Terms and Conditions. You have the freedom to cancel the program anytime before the renewal date. Even if canceled, you will still have access to valuable chess databases lifetime without future updates. Thank you for supporting our cause to make a difference in the lives of underprivileged children through education and donations. Check out our latest chess cause charity, donate chess set and and save 20%

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  • OM CORR
  • €39
  • Correspondence chess database with 2.2 million human chess games. The largest collection of ICCF or corr chess players
  • FOR: Correspondence chess players (e.g. ICCF)
  • UPDATES: monthly
  • Formats: Chessbase, PGN
  • Pay with card
  • Check Out with PayPal
  • Review details
  • OM OTB
  • €59
  • Over-the-board database with 10.2 million human chess games. The largest FIDE/OTB chess database collection.
  • FOR: Classic chess players (e.g. FIDE players)
  • UPDATES: monthly
  • Formats: Chessbase. PGN
  • Pay with card
  • Check Out with PayPal
  • Review details
  • OM GOLEM
  • €99
  • Chess Database with 31.4 million human chess games. The largest ever collection of human chess games since 1800
  • FOR: Collectors - World largest human chess database
  • UPDATES: monthly
  • Formats: Chessbase, PGN
  • Pay with card
  • Check Out with PayPal
  • Review details
 

Download 56 top openings by Opening Master for free and try our chess databases for free. For indian flag small Indian customers please visit here to pay with local debit cards.

The Opening Master Chess Databases since 2004

Discover the ultimate chess winning game with Opening Master chess databases! Our exclusive collection features over 31 million top human chess games, making it the most extensive human chess database without any duplicates. The OM OTB with 10.2 millions human chess games or OM CORR with 2.2 millions correspondence chess games is something for every chess player.  ♥ Join today and unlock the biggest chess database package, carefully crafted over 18 years of research and development. Opening Master is official database partner of FIDE - International Chess Federation Education Commission, a proud sponsor of ICCF global tournaments and a trusted chess database partner of global chess education platform GCHESS. For our youngest ones we partner with ChessKid.com - the safest online chess platform for children. Opening Master gives back to the community by partnering with Gift of Chess, a humanitarian charitable organisation from NY, USA, to support underprivileged communities in Africa by giving out 1 million free chess sets. If you are a tournament organizer, arbiter, club trainer, streamer or player please join our partner OUTPOSTCHESS see many benefits for you. We offer you the most reliable and comprehensive chess databases starting as low as 39 EUR. Don't wait any longer to take your game to the next level - sign up now and start learning and winning! 

   FIDE logosmall   ICCF transChessKid trans  GCHESS trans Gift of Chess trans Outpostchess logo trans

“It’s the biggest and strongest chess database out there” - GM Simon Williams, CEO GCHESS

Subscribe to our YouTube channel Youtube Openingmaster to learn chess openings and much more. Listen to our Spotify Podcasts spotify icon transon weekly basis.

Chess database Matrix

Database name
OTB
Number of games
2,257,785
10,230,938
31,440,366
1,738,847
487,942
Formats supported
cbv, pgn
cbv, pgn
cbv, pgn
cbv, pgn
cbv, pgn
Last Update
06/2025
06/2025
06/2025
02/2025
02/2025

From our kitchen

Tuesday, 12 August 2025 13:38

Everyone knows becoming a billionaire is hard. You need big ideas, a bit of luck, some ruthless business moves, and ideally a photo with Elon Musk on LinkedIn. Did you know that statistically, it’s...

Friday, 13 June 2025 10:30

In an era dominated by real-time online blitz games, grandmaster commentary streams, and AI-assisted training tools, one might assume that correspondence chess has faded into history replaced by the...

Wednesday, 11 June 2025 20:17

In the ever-evolving world of chess, where engines grow stronger, ChatGPT is everywhere and preparation becomes ever more critical, one thing remains constant - the need for accurate, reliable , and...

Tuesday, 13 May 2025 20:23

In an era where Artificial Intelligence dominates headlines whether it’s ChatGPT from OpenAI, Gemini by Google, or Elon Musk’s Grok on X, one might wonder: Is there anything still purely human? One...

Sunday, 06 April 2025 06:48

March was a dynamic and electrifying month for the global chess community. From world-class tournaments to almost perfect individual performances, the chessboard saw battles that inspired fans and...

Saturday, 08 March 2025 01:37

Today, on International Women’s Day, we honor the incredible women who have shaped the world of chess—past, present, and future. Chess has long been a game of strategy and intellect, but for...

Monday, 03 March 2025 00:48

We are thrilled to share that Opening Master has taken its nonprofit mission for chess education to Accra, Ghana, joining forces with The Gift of Chess (New York) and the West African Chess Academy....

Tuesday, 18 February 2025 23:12

The world of chess databases just witnessed a historic transformation! At Opening Master , we have undertaken the biggest clean-up of the century , removing more than 2 00,000 chess players and...

Sunday, 09 February 2025 18:23

Powerful stories of strong minded people effecting hundreds of thousands young children not only in Africa. Tunde Onakoya is now in New York where I met him last time discussing how one can grow up...

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Our most famous chess databases

If you ask us, which is the most favourite product our customers are buying, the clear answer is OM CORR. All ICCF players love it. The OM OTB is the most powerful over-the-board chess database ever made, and many FIDE GM players use it and OM GOLEM - well it's just the biggest one out there.

 

OM GOLEM

OM GOLEM is the ICON of all human chess databases. The database is so massive that the most robust computers are needed. It has more than 31.4 million human games without duplicates. It is a mixture of correspondence, OTB, and portal games.

OM CORR

The OM CORR wasn't always a separate chess database until about seven years ago when the need from correspondence players stood out. With 2.2 million games, it is the correspondence best chess database suited mostly for ICCF players.

OM OTB

The OM OTB with almost 10.2 million chess games is the biggest over-the-board collection of human chess one could come up with. It all began in 2004 when creators started to collect games and analyse them. A must package for all FIDE players.

 

Working with OM inside Chessbase

The following tutorial will show basic menu usage in the Chessbase environment while using the Opening Master Database. The usage is split into THREE parts:


1) TOP MENU - working with the entire database from the top environment/workspace.
2) MENU INSIDE OPENING MASTER DATABASE - features the menu functionality and style as you are used to in the Chessbase environment, as well as the popular and most frequent usage of different sub-menu or tabs. For tutorial purposes, only the most frequently used menus are described however if you would like to review the entire Chessbase environment we recommend watching some of the cool instructional videos on YouTube.
3) MENU INSIDE INDIVIDUAL GAME - Focus on the most important menus which are available inside each individual game offered. Here you can study an opening of the game, examine the opening report, analyze open or closed positions, and many more...

TOP MENU

Chess Base offers a standard Windows-like environment that allows you to choose from 6 menu options:


    •    FILE - New - Open - Activation - Install - Email Selected Database - Customize - Options - About - Close

OpeningMaster Open Chess Database


    •    HOME- Copy - Paste - Remove - New - Open - My Databases - Cloud Databases - Board - Online - Harddisk - Prepare Against - Find Player - Palyer Encyclopedia - Log off - Edit Account

top menu chessbase


    •    REPORT - Opening Reference - Editorial Annotations - Collect Openings - Generate Repertoire - Repertoire White Report - Repertoire Black Report

report chessbase openingmaster


    •    Maintenance - Back Database - Properties - Create search booster - Delete Search Booster - Rename files - Unannotate DB - Delete all files - Remove Deleted Games - Check Integrity

Maintenance chessbase


    •    CLOUD - Cloud Databases - Create Cloud Database - Move Repertoire to Cloud - Cloud Engines - Log off

chessbase cloud


    •    VIEW - HELP

View Chessbase

MY DATABASES

The most frequent usage in the top menu is HOME - MY DATABASES. Here we focus on the Database sub-menu. You can perform some interesting actions with your database (after you installed it successfully onto your workspace - see the separate tutorial for installation of OM DB). The most important menu is when you go inside the database - Opening Master and see the individual menu there.

HOME - ANALYSIS - GAMES - PLAYERS - OPENING KEYS - VIEW

Menu Inside Opening Master - Focus on Players and Games Tab

One of the interesting Tabs which we are going to focus on is ''Players''. Here you can sort players by last name, total games played ELO rating, title, country, etc. From this panel, you may navigate to 3 different windows (Main, Top Right, and Bottom Right)

Double click on the selected row on each of the windows and you can see the content of this selection.

inside chessbase openingmaster

Working with each submenu, tabs, windows are the same on all occasions or views. Follow the same logic as described above. Once you double click on the line of the game (either from players or games tabs - see picture above) you will get to the separate window, and you are already in the individual game mode which is described in the last section of this tutorial.

Top Row Tabs
    •    Text - OM DB has no text guidance, thus it is not used
    •    Games - Openings ordered by a key (e.g. game number, name, eco.. you can sort it by clicking on the tab heading
    •    Players - All players in OM Database. You can sort them, search or click on individual games. You can navigate via 3 windows
    •    Tournaments - looking for a specific tournament - OM has most of them recorded. Play them all
    •    Openings - all openings games sorted by ECO code. See individual codes collapsed to categories

Inside the Individual Game

opening master chess game

Menu Inside Individual Game

To have specific menu items appear in the individual game menu, you must first get to this place. To do that, follow simple steps in the above tutorials (TOP MENU and MENU INSIDE OM) and double click on the specific game that you are looking for. The screen which you should be seeing is as follows:

FILE - HOME- INSERT - BOARD - REPORT - ANALYSIS - TRAINING - VIEW

The menu items are again similar to the top menus with small differences and tools. The most important are described below in three steps.

Step 1 - Classification of the game

Ever wondered what type of opening the best players are using? Have you got yourself familiar with ECO codes i.e, Queens Indian, Sicilian-Najdorf, Caro -Cann, King's Gambit, etc... Why don't you use the ''Opening Classification'' and learn the theory of moves by sequence?


A) Go to REPORT -> Opening Classification

B) Follow the Opening Classification screen below and learn details. You can expand and collapse sections there as well.

Step 2 - Commenting on your games

Do you like to make notes of your moves, do you like to remind yourself in case of an important move and come back to it later? Why don't you make comments? Chessbase offers a very easy yet sophisticated method how to insert text before the move or after the move or just annotate it with special chess symbols (annotation will be a separate tutorial as this technique is one of the most advanced players do when commenting on the games)

A) Go to INSERT-> Annotations

Step 3 - Opening Report

In case you want to study deeply an individual game or opening go to REPORT - > OPENING REPORT. This tool will enable you to see almost everything which you wanted to see about your opening. The game opening must have all moves in the correct sequence (no novelties) in order to display it correctly (i.e. when you play a certain opening you move in sequence).
Example of how you can use the opening report: You play a game with the opponent and you are stuck in one moment and don't know what to play next. Perhaps there is an optimal route for you, who knows. If you replay your game (and the opponent moves too) step by step on a new board (File -> New -> New Game) and then select

REPORT -> OPENING REPORT, Chessbase will take you to a different environment. The environment of Opening Report.

See the statistics of all other games/moves which have been played until now and select the optimal way for your future move or game.

opening report OM

 Download an example of the Opening Report here

 

We use Sync.com Cloud

sync is the new save How it works:

1. You select type of Plan you wish to download. OM CORR, OM OTB or OM GOLEM

2. Pay by the  secure gateway PayPal. We accept major credit/debit cards.

3. A confirmation email with the subscription details comes to you.

4. We register your email address to cloud service SYNC and invite you to a shared folder. It's all FREE.

5. You download all the databases to your local hard drive. You will always find a newest version of the Opening Master chess databases on the cloud.

Why Opening Master

  • It's biggest +

    Yes, we have reached a massive collection of more than 30 million human chess games.
  • For correspondence or ICCF players +

    If you are standard or professional ICCF players, the OM CORR database with 2 million
  • For OTB or FIDE players +

    The FIDE collection or OM OTB with more than 9 million games. This is the
  • Top Notch Support +

    Didn't find a game you were looking for? Write to us. Found a wrong game?
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What Our Clients Say

  • “It’s the biggest and strongest chess database out there” - GM Simon Williams, CEO and Founder of GCHESS
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Federations we supported Our Current and Previous Cooperations

ICCF

ICCF

International Correspondence Chess Federation - Global Read More
Czechia

Czechia

Czech Correspondence Chess Federation Read More
India

India

All India Correspondence Chess Federation (AICCF) Read More
U.K.

U.K.

British Federation for Correspondence Chess Read More
Romania

Romania

Şah prin Corespondenţă Read More
Argentina

Argentina

Liga Argentina de Ajedrez por Correspondencia Read More
Spain

Spain

Asociación Espaňola de Ajadrez por Correspondencia Read More
Portugal

Portugal

Associacao Portuguesa de Xadrez por Correspondencia Read More
Turkey

Turkey

TCCA Turkish Correspondence Chess Association Read More
USA

USA

International Correspondence Chess Federation USA Read More
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