OM Chess Academy

The Unstoppable Chess Academy is for anyone who is interested in mastering the art of chess with wide range of resources and tools that can help you improve your game and develop your skills.

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Check our Frequently Asked Questions (FAQ) and see if you don't find answers to your questions. We collected the questions from chess players asked over a period of 18 years. If not contact us.

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For some time we have been analyzing our duplicates. We knew we had few, you always found some, we didn't how many we had but we knew there are these suckers who always pop up and destroy our image of duplicate free chess database. Well, no longer is the case. We announce duplicate free OTB chess database.

The day has come. We have been able for the last couple of months to work on the quality. It only took months to compare it and index it. De-duplicate it. The never ending battle between recorders of the events and chess games collectors is over. The chess games collectors announce victory. No more duplicates to be found anywhere in the OTB Chess Database April 2016 version. We had to go down from 7,792,491 games to 7,600,674. So almost 190K duplicates. We truly apologize for that. Now it is finally clean. Please come back to us if you ever find a duplicate in this version.

7,600,674 of OM OTB GAMES. PERIOD


We also updated the OM STANDARD and OM BASIC Plans. The difference is shown on our DOWNLOAD PLANS. Some chess players need only OM BASIC which is cheaper but does not include CB and CA files, some prefer OM STANDARD with all extensions but only annual updates and some chess players usually the professional level up demand the monthly updates. Enjoy.


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If you are not sure which database is right for you or which chess programs you need, contact us and we will be happy to assist you.

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Cloud Services

All our chess databases are stored on external cloud service at This way you have access to the new release immediatelly after we publish it. 

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Contact Info

Opening Master chess databases are copyrighted material. Please refer to our terms and conditions for using the collection. Do not distribute, make illegal copies or parts of the databases. We are not expensive.

Opening Master chess databases are only available as part of the Subscription plans.



+421 (917) 252-978 (Europe)

+1 (424) 610-7507 (USA)

+91 (870) 805-8364 (India)

HQ Address

Mariánska 32/A
Stupava, 900 31, Slovakia


administrator(at) or academy(at)


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