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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
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  • 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
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  • 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
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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
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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.

 

Lack of respect by GMs?

One of my favorite chess tournaments, if not the most, is the World Chess Cup. You have there plenty of interesting games, all kind of Grand Masters, classical, rapid and blitz games… what more can we ask for? But have you seen the hot drama between Kramnik and Bruzon? That was something.

The main cons are that you cannot watch all the games at the same time and also that you can waste lot of time because its addictive component…

I would like to show you one of the most interesting positions to me.

1

This happened in Kramnik-Bruzón, on their first game from the second round. After using the known as “second file defense”, in which you use the stalemate idea for pushing away the King every time White wants to give checkmate, Bruzón was holding, till on this position he blundered with 113…Kb7? allowing 114.Ra1 after what the computer says it is mate in 16 moves.

After 113…Rb3 it is a draw, because if 114.Kc6 Black has the above mentioned stalemate idea with 114…Rb6+!

Looking at the chess engine or the analysis of this game in any web or magazine can be deceptive. This ending looks easy to defend but many Grand Masters, of course with the help of the time pressure and tiredness after a long game, manage to lose it. So I always wonder why having three different kinds of defenses they choose this one instead of the most classical one:

2

White simply pins the bishop and it is impossible to make any progress, when the King goes to one side, you move your own King towards the other side:

Rakhmanov,Aleksandr (2620) - Domínguez Pérez,Leinier (2736)

TCh-ESP Div Honor 2015 Linares ESP (4.1), 18.08.2015

63.¦e7 ¢d4 64.¢f1 ¥f4 65.¦e2 ¦h8 66.¦e7 ¢d3 67.¢g2 ¦f8 68.¦e6 ¥e3 69.¢g3 ¢d4 70.¦d6+ ¢e5 71.¦a6 ¥d4 72.¢g4 ¦f1 73.¦a5+ ¢e4 74.¦a4 ¦g1+ 75.¢h4 ¢e5 76.¢h3 ¦g8 77.¦b4 ¥e3 78.¦g4 ¦a8 79.¦b4 ¢f5 80.¢g2 ¦a3 81.¦c4 ¥f4 82.¢f2 ¦e3 83.¦c8 ¦d3 84.¦f8+ ¢g4 85.¦g8+ ¥g5 86.¦e8 ¦d6 87.¦e4+ ¥f4 88.¦e8 ¦d2+ 89.¦e2 ¦xe2+ 90.¢xe2 ½–½

 

Of course I am not trying to give any advice to such a strong player like Bruzón is, but if we check on the Opening Master database we will find many examples where the Rook side is losing after using the second file defense, whereas I do not know any game where they lost using the classical defense. By the way, usually the rook side loses after missing some checkmate in one move. The one who is writing these lines had a strange experience about this, I will punish myself showing it to you:

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Serrano Salvador,Eduardo (2327) - Candela Pérez,José (2402)

Madrid Team Championship (6), 25.01.2009

[Black is just four moves away from reaching the 50 moves without captures or moving a pawn and the position is a draw after 99...Rc1 Realizing about it and being very tired after a long and tense game, I was already thinking on other kind of things but chess. What happened now is just stunning:]

99...¢c8?? 100.¦c7+?? [After my move, I could see some of my team mates looking at me like if I had a huge snake on my neck. Of course, 100.¦g8#] 100...¢b8 101.¦d7 ¢c8 102.¦e7 And we have reached the 50 moves ½–½

 

A great tool from any chess database software like Chessbase or Chess Assistant with powerful chess database like Opening Master OM OTB with 7.7 million games is that you can search games with this (or some other) ending with much ease. Then you can see how far away are those times where the masters thought it was a lack of respect trying to win this kind of ending against them, unless you check the correspondence chess database (OM CORR), of course. Nowadays, you should be prepared for facing and defending it, but I would not recommend it with chess analysis using chess database but studying it with any endings books and then playing both sides with any friend of similar level.

--Eduardo Serrano Salvador--
FIDE 2351

 

 

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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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