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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.

 

History of Opening Master

The original name Opening Master was born in 2004 when the web site was also registered. The founder and creator Alexander Horvath, SIM (1954 - 2013) was a big fan of collecting data since the origin of correspondence chess back in the 80s. I personally remember him writing down all the games in a big red note book, studying the opponents from the older notes and having thousands of books on different openings.

Going to the post office with paper post logs with chess moves, and receiving replies from chess players 1-2 weeks later. The 90s meant computers and chess databases. And faster collection and analysis.The studying and real collecting of the games wasn't really meaningful until the Internet era started. The birth of chess databases and the birth of Opening Master. The legacy continues with more power and strength, more analysis and more statistics. The correspondence chess is about studying a perfect move, perfect opening, middle game and perfect closing. The computers help humans to analyze and decide however we STILL believe the human brain has bigger potential than the computer. Therefore the original decision was to produce ALWAYS the human games only. In 2004 and also 2015.

About Opening Master

OpeningMaster.com is a privately owned enterprise. The authors have been involved in chess for more than 30 years and are internationally recognized players. The creator of the project is Alexander Horvath, Senior International Master, ICCF (ELO 2497, 2. GM Norm) member of Slovak National Team (Gold Medal ICCF European Team Championship). Other main contributors to OM databases are Jan Helbich, SIM , Peter Pasko, SIM and Slávka Hulecová, LIM.

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Mission Statement

• NO multiple data / same games presented twice - duplication issue

• NO short games (less than 8 moves)

• NO computer games

• NO games which were played prior 1900 as we consider them as 'too romantic'

• NO games without body (as they don't bring any analysis value add)

• YES - to provide best chess databases with highest quality from humans to humans

How things have started:

Version Release Date Games  
OM Alpha 2005  3,300.000  
OM Beta 2006  4.500.000  
OM RC1 2007  4,800,000  
1.00 March 7, 2008 5,083,779  
1.01 March 16, 2008 5,112,427  
1.02 April 2, 2008 5,115,853  
1.03 May 2, 2008 5,131,048  
1.04 June 10, 2008 5,154.271  
1.05 July 5, 2008 5,168,049  
1.06 August 4, 2008 5,225,910  
1.07  September 4, 2008 5,271,420  
1.08 October 3, 2008 5,324,805  
1.09 November 3, 2008 5,510,355  
1.10 December 5, 2008 5.537,195  
1.11 January 5, 2009 5,539,943  
1.12 February 4, 2009 5,557,710  
1.13 March 3, 2009 5,541,146  
1.14 April 5, 2009 5,565,054  
1.15 May 2, 2009 5,580,129  
1.16 June 2, 2009 5,604,608  
1.17 July 5, 2009 5,625,215  
1.18 August 3, 2009 5,645,742  
1.19 September 6, 2009 5,677,818  
1.20 October 4, 2009 5,700,186  
1.21 November 7, 2009 5,717,136  
1.22 December 5, 2009 5,737,826  
 1.23 January 2, 2010 5,748.250  
1.24 February 6, 2010 5,762.539  
1.25 March 5, 2010 5,780.518  
1.26 April 5, 2010 5,801,613  
1.27 May 5, 2010 5,816.945  
1.28 June 4, 2010 5,831.786  
1.29 July 5, 2010 5,848.879  
1.30 August 4, 2010 5,875.890  
2.00 September 4, 2010 5,862.783  
2.01 October 4, 2010 5,926.283  
2.02 November 3, 2010 5,959.156  
2.03 December 4, 2010 6,036.810  
2.04 January 6, 2011 6,056.943  
2.05 February 3, 2011 6,069.539  
2.06 March 3, 2011 6,081.506  
2.07 April 5, 2011 6,108.883  
2.08 May 4, 2011 6,150.939  
2.09 June 5, 2011 6,192.640  
2.10 July 4, 2011 6,213.832  
2.11 August 6, 2011 6,249.821  
2.12 September 1, 2011 6,277.510  
Version Split Date OM GOLEM OM OTB
2.13 October 1, 2011 7,543.153 5,674.681
2.14 November 1, 2011 7,623,665 5,700,862
2.15 December 1, 2011 7,665,905 5,738,984
2.16 January 1, 2012 7,848.778 5,857.167
2.17 February 1, 2012 8,080,111 6,060.027
2.18 March 1, 2012 8,104,368 6,149,182
2.19 April 1, 2012 8,104.368 6,135.474
2.20 May 1, 2012 8,170.695 6,151.394
2.21 June 1, 2012 8,200.503 6,181.420
2.22 September 1, 2012 8,341.648 6,273.439
2.23 January 1, 2013 8,701,379 6,579.340
2.24 June 1, 2013 8,701,379 6,533,462
2.25 October 1, 2013 8,701,379 6,594,984
2.26 October 1, 2014 8,701,379 6,718,376
2.27 December 1, 2014 8,701,379 7,347,687
2.28 January 1, 2015 10,015,200 7,442,823
2.29 May 1, 2015 12 mil* 7,651,818
3.00 2016 14 MIL 8 mil
4.00 2017 20 mil 8,5 mil
5.00 2018 26 mil 8,8 mil

* Major increase in OM GOLEM were human chess games coming from OM PORTAL. OM CORR has been increasing stable from 1,3 mil to 1,7 mil games.

 

History of Logo development

history om logo

  • 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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