• 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

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...

Sunday, 09 February 2025 13:50

Opening Master and FIDE Education Commission is calling all out STEM graduate degree students who would like to author interesting BIG DATA chess science project. With a massive chess database like...

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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.

 

ICCF - OM worldwide promotion

We are proud to present the worldwide agreement with ICCF about providing 50% discount to all ICCF valid members. Chess users can claim this discount via using special promo code received in their newsletters. If you missed the ICCF email, the copy is provided here. Please use this one time offer until December 31,2016.

 

 
 
ICCF
 
Dear {your name here}
 
Special offer for ICCF players!
 
We are happy to announce that due to recent cooperation agreement between ICCF and Opening Master - The Chess Database Company, we can offer to all ICCF members worldwide Special Discount Offer. This discount shall be available on any order placed for download from October 1 through December 31, 2016 and for all OM ULTIMATE packages chess players will pay only price of OM BASIC. (That is 29 EUR instead of 59 EUR). We are giving away 50% discount. How to apply for the discount? All you need is to type ICCFOM50 code into the discount field when checking out while purchasing of the product. The discount will be applied immediately.
 
 
What is Opening Master?
 
Opening Master is the biggest database of chess games played over the board or by correspondence. Its latest version includes more than 7.6 million OTB games and 1.6 million correspondence games. It also separately processes games played by players with pseudonyms on various chess servers (24 million games). Opening Master has been on the market for more than 10 years.
 
What can I use Opening Master for?
 
Practical chess players most often use the Opening Master database when preparing for an opponent. They look up games played by their future opponent in the database and prepare themselves for the opening. The database is also very well suited for preparing the rest of your repertoire – one can easily find out what variations are being played at what rate of success. There is an important difference between OTB and correspondence games however: correspondence games usually feature openings that are completely different from practical chess. With Opening Master, you don’t have to rely on your memory and can freely enjoy all kinds of complicated moves – all of them are easily accessible via the database! The database is frequently used by correspondence players even during the game for looking up whether their position has already occurred in other games, how and by whom it was interpreted and what are the statistics for it.
 
Who is Opening Master designed for?
 
Opening Master is designed for all practical and correspondence players that want to take chess seriously, no matter what their level is. Today, no players, not even the grandmasters, can do without computer assistance.
 
What environment can I use the Opening Master database in?
 
The database is published in three versions designed for the most popular chess database software programs – ChessBase (.cbv), ChessAssistant (.cdp) and SCID (.pgn). The PGN format is universal, can be used in all chess environments.
 
How is Opening Master different from the databases published by ChessBase and ChessAssistant?
 
The difference lies within the philosophy of building the database – ChessBase deals with whole tournaments and all the games, even those, which were not played. It builds a database representing the history of the chess game. Opening Master has a more pragmatic approach: it deals with all games that fulfill the following criteria:
 
- The game is newer than 1.1.1900
- The game has at least 8 played turns
- The players have a rating of at least 1300
- The game was played by people, not by programs
 
Last but not least, an important difference is the significantly lower price: you can get a year-long access to monthly updates from 29 EUR.
 
How is Opening Master different from free databases?
 
Despite getting our games from different sources, we dedicate a lot of time to eliminate duplicates. We also normalize the names of the players, which amounts to dozens or even hundreds of corrections a month. The free databases are often very low-quality and cluttered with lots of duplicates.
 
Where can I find more information and order the Opening Master database?
 
You can find the newest information about Opening Master at our website www.openingmaster.com. You are welcome to become a member of the ever growing community of our product’s users.
 
 
 
© 2016 ICCF We hope you found this message to be useful. However, if you'd rather not receive future emails on behalf of ICCF's commercial partners, please opt-out by checking "Disable notifications sent on behalf of ICCF's commercial partners" in your personal settings.

ICCF - The International Correspondence Chess Federation www.iccf.com

 
 

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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