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Chess Database - Pay what You really need

All chess database plans come with awesome support by email and phone. There is no hidden fee!

  • OM Basic
  • €28 / year
  • As-is chess databases, no monthly updates
  • OM OTB, OM CORR, OM 2500, OM TOP CORR, 52 Opening reports
  • Formats: PGN only
  • Sign Up
  • OM Standard
  • €39 / year
  • As-is chess databases, no monthly updates
  • OM GOLEM, OM OTB, OM CORR, OM PORTAL, OM 2500, 52 Opening Reports
  • Formats: Chessbase only
  • Sign Up
  • OM Ultimate
  • €59 / year
  • Monthly updates, includes also OM CORR TOP
  • OM GOLEM, OM OTB, OM CORR, OM PORTAL, OM CORR TOP, 52 Opening Reports
  • Formats: CB, CA, PGN
  • Sign Up
 

Download free OM POWER 2500+ to try out our chess databases. No credit card needed! Review in details our product portfolio View Product Portfolio.

The Opening Master Chess Databases since 2004

The Opening Master chess databases feature a unique chess games collection with more than 26 millions of top human chess games, making it the most significant human chess database without duplicates. Experience the power and flexibility of Google No.1 "largest chess database"  to create the ultimate chess winning game. Become a member today and enjoy the biggest chess database package, all carefully selected with more than 14 years of research and development. Subscribe to our annual programs starting as low as 28 EUR / year.

Chess database Matrix

Database name
OM OTB
OM CORR
OM PORTAL
OM GOLEM
OM OTB
OM CORR
OM PORTAL
OM GOLEM
OM OTB
OM CORR
OM PORTAL 2000
OM CORR 2300
Type of Subscription
BASIC
BASIC
BASIC
STANDARD
STANDARD
STANDARD
STANDARD
ULTIMATE
ULTIMATE
ULTIMATE
ULTIMATE
ULTIMATE
Number of games
7,600,674
1,613,952
15,534,494
26,501,780
8,196,295
1,693,700
18,288,579
26,501,780
8,403,896
1,773,636
7,136,309
173,101
Formats
PGN
PGN
PGN
CB
CB
CB
CB
CB
CB, PGN
CB, PGN
CB
CB, CA, PGN
Last update performed
Apr 19, 2016
Sept 27, 2015
Oct 19, 2015
Jan 30, 2017
Oct 7, 2017
April 25, 2017
July 6, 2017
Jan 30, 2017
April 24, 2018
June 2, 2018
April 1, 2018
April 28, 2015
Update Frequency
Annually
Annually
Annually
Annually
Annually
Annually
Annually
quarterly
quarterly
quarterly
quarterly
quarterly
  • All
  • Announcements
  • Federations
  • General
  • Holidays
  • Newcomers Corner
  • Openings
  • Default
  • Title
  • Date
  • Random
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Our most famous chess databases

If you ask us, which is the most favorite 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 26 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 1,8 million games, it is the correspondence best chess database suited mostly for ICCF players.

OM OTB

The OM OTB with more than 8 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 analyze them. A must package for all FIDE players.

 

Migration of cloud service

Dear Chess friends,

we have an important announcement to make. After 6 years of using cloud services of our vendor SugarSync we decided it is time to move on to better, faster and more reliable. We have heard many unpleasant stories about slow downloading, breaks, corrupted files etc and contacted number of times the help desk of SugarSync. Their response was always like it is the users issue, they have slow internet or provider is blocking their services and other B.S. Despite numerous attempts to show them comparison of other services they were unable to help us. So it is time to move on. We have found better, faster, more reliable service to you. It is called Sync.com.

The Cloud service is free of charge for you unlimited (not like SugarSync requires 90 days active account otherwise they cancel it) time and offers 5 GB of free storage (our shared folders do not count into this 5GB) . We use business PRO account which means we get to share with all of you the content of the folders. Another massive improvement in security is that members DO NOT see each other and we get to share large files at once. We no longer need to use the compression of RAR or ZIP which I know many of you hated it. This was also a limitation of sugarsync. The most important factor is the download speed. This we find after testing 10x faster than sugarsync and also more reliable (does not crash in the middle). The replication services is fast and secure. We offered it to some chess members and they were all happy with the service.

We will start migration of cloud services ASAP meaning please expect email invitation to the sync.com folder where we share our chess databases soon. We will run sugarsync simultaneously for some time and then discontinue the account. Please contact us in case you haven't received the invitation by December 1, 2016.

Take a look at the major characteristic of sync.com

syncbest

Sync and storage

Save files on your computer and keep them synchronized and accessible across all your computers and devices.
  • Access your files from any computer or device
  • Desktop apps for Windows & Mac OS X
    (Windows XP, 7, Vista, 8, 8.1, 10 - Mac OS X 10.5.2+)
  • Mobile apps for iPhone, iPad and Android
  • Web browser access
  • Offline access
  • Selective sync
  • 5 GB storage always free (never expires)
  • Up to 2 TB of storage space

Sharing and collaboration

Improve productivity with file sharing designed to make internal and external document collaboration fast, secure, and 100% private.
  • Send files to anyone - even if they don't have a Sync account
  • Send large files fast
  • Allow anyone to securely send files to you
  • Create shared folders, and invite clients or team members to collaborate
  • Admin panel with multi-user access control
  • Set custom passwords for viewing shared content
  • Set expiry dates
  • Set permissions such as "read-only" or "read-write"
  • Set download limits and view download stats
  • Remote wipe data on any share

Backup and restore

Back up your files all in one place, protect them from accidental deletion, and never lose your files again.
  • Realtime backup
  • Disaster recovery (quickly restore to new computer)
  • Deleted file recovery
  • File version history, preview and restore
  • Sync Vault (cloud only storage)

Security and privacy

Sync's unique, zero-knowledge storage platform guarantees your privacy by providing end-to-end encryption, and most importantly - only you have access to the encryption keys. We can’t read your files. Neither can the NSA.
  • Zero-knowledge, end-to-end encryption
  • Privacy guarantee (we can’t access your files or file metadata)
  • 2048 bit RSA, 256 bit AES, SSL and TLS encryption
  • Files encrypted in transit and at rest
  • Share controls, permissions and user administration
  • Remote logout
  • Remote wipe
  • File audit logs
  • Account notifications
  • Two-factor authentication

Compliance

Ensure your company meets data privacy compliance guidelines and legislation - important if you operate in a regulated industry.

Datacenters and technology

Sync maintains world-class datacenter facilities to ensure your files are always available.
  • SOC-1 certified datacentres with security audits by KPMG
  • Hardware redundancy - RAID storage
  • Network redundancy - multi-homed network providers
  • About
  • Team
  • FAQ
image Modern. Powerful.

About Opening Master

Made in Power

Made in Chess

The Opening Master is the biggest human chess database collection of the world. It has been carefully collected over the past 14 years with focus on quality and quantity. More than 26 million of human chess games

Meet the team.

The founders of Opening Master chess database have been playing chess for more than 30 years each and are recognized international players.

image Alexander Horvath Founder

image Alex Horvath CEO

image Jan Helbich Lead Developer

image Slavka Hulecova Senior Analyst

Flexible & Adaptable chess databases

There are a series of smaller chess databases beyond the large OM GOLEM, to show how flexible the database system is, choose best plan for you and start playing.

Chess Base formats

The most popular chess database software can work with our chess databases

Chess Assistant formats

Those who prefer analysis with Chess Assistant we have formats. Also for SCID users a free PGN formats are supplied.

Why Opening Master

  • It's biggest +

    Yes, we have reached the massive collection of more than 26 million human chess games.
  • It's baddest +

    If you are standard or professional ICCF players, the OM CORR database with 1,8 million
  • Over the board +

    The FIDE collection or OM OTB with more than 8.8 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

  • Great chess databases! Greetings from Portland, Oregon, USA and the Portland Chess Club. Jonathan Ray Fortune (Correspondence Chess Master (CM), United States Chess Federation)
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Federations we supported Our Current and Previous Cooperations

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