Understand the Hedgehog

All Databases (291)


Queen's Gambit Accepted - Simple Solution to 1.d4 (7h Running Time)  Discounted 

The masterclass - Queen's Gambit Accepted - Simple Solution to 1.d4 is already a digital product. This product includes all the videos from the workshop as well as the PGN file related to the training sessions. Overall, the material consists of approximately 7 hours of video and a PGN database which includes 63 files!


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1.d4 Complete Opening Repertoire for White with GM Tornike Sanikidze (9 hours 55 min Video Running Time) 

GM Tornike Sanikidze, a coach of the gold-winning Georgian Women's National Team, has prepared 1.d4 Complete Opening Repertoire for White giving you a full-blown repertoire for White in just under 10 hours!

Partner Product:

The Chess World


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Tactic Ninja (19 hours 26 min Video Running Time)  Discounted 

Together with 5 coaches, ChessMood worked for 6 months on this chess tactics course to prepare for you easy-to-digest material. We’ll introduce you to all tactical patterns and how to notice them in a real game.

Partner Product:

Chess Mood


Video Content


Play the Dubov Tarrasch (3h and 20min Video Running Time)  Discounted 

We are happy to present the new database of GM Renato Quintiliano - Play the Dubov Tarrasch. This research provides a complete repertoire for Black after 1.d4 d5 2.c4 e6 3.Nc3 c5. True to his analytical approach, GM Quintiliano submits the arising positions to in-depth analysis. In this database, you will find many new ideas and fresh positions. The database consists of 8 huge theoretical chapters, 16 interactive test positions, a Memory Booster, and Video Version (Running Time 3h and 20 min).


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Play the Queen's Gambit Exchange Variation - Part 2 (2.5h Video Running Time) 

In this database, GM Michael Roiz completes his repertoire based on 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 While Part 1 was entirely dedicated to the Carlsbad type of position arising after 4...exd5, the current database also deals with the Semi-Tarrasch which occurs after 4...Nxd5. Additionally, in this course, GM Roiz deals also with 4...exd5, thus covering lines that cannot be found in Part 1. The database consists of 11 theoretical chapters, 11 interactive test positions, a Memory Booster, and Video Version (2.5h Running Time).


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Understand the Sveshnikov Sicilian (9h Video Running Time)  Discounted 

Sicilian Defense has always been the most ambitious reply for Black against 1.e4. Svesnikov Sicilian is one of the most popular and interesting variations. It increased its popularity recently mainly due to the efforts of Magnus Carlsen, who scored many brilliant wins with it. It is an aggressive system but still not as sharp as the Najdorf variation. When you study the plans and ideas well, this opening can suit you well for a very long time.


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Endgame Crash Course with GM Krisztian Szabo (10 hours 10 mins Video Running Time) 

GM Krisztian Szabo is here with his brand-new Endgame Crash Course - a 10+ hour-long video training aimed to up your endgame skills from losing one pawn after another on every move to seeing the “end” after 20+ moves.

Partner Product:

The Chess World


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Grandmaster Mind - How To Learn From Your Own Games  Discounted 

In the current workshop, you can see inside the grandmaster's mind. GM Petar Arnaudov will share his thoughts about some of the most important practical aspects of the game. You will learn how he prepares against his opponent and what he thinks during the game. You will see for yourself what is the difference in the thinking process between you and a grandmaster. The lectures will improve your thinking process, decision-making, and analytical skills.


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The Correspondence Chess Today  Updated 

In his first database for Modern Chess, GM Nikolai Ninov made a theoretical overview of the ICCF 19th Correspondence Olympiad Final. GM Ninov is one of the few Grandmasters at Correspondence and OTB chess. As we know, correspondence games are full of interesting theoretical ideas and high-quality novelties. The author divided the material into 10 chapters dedicated to different openings: The Reti, The Gruenfeld, The Catalan, The Slav Defence, The Anti-Slav Deviations, The Nimzo-Indian Defence, The Ragozin Defence, Open Games, The Sicilian Defence, The London System. Any chess player who is interesting in modern theoretical developments will something interesting for him in this database.


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King's Indian Defence - Expert Repertoire for Black - Part 1 (10h and 50 min Running Time) 

In the current database, GM Ivan Cheparinov covers some of the most critical systems that White uses against King's Indian Defence, including the Classical System. It is very important to point out that the suggested repertoire is highly ambitious. Always, when it's possible, Cheparinov proposes relatively less explored lines where Black is trying to overtake the initiative. In the entire repertoire, you will hardly find a static position in which Black is doomed to passivity. The database consists of 17 theoretical chapters, 17 interactive test positions, a Memory Booster, and Video Version (10h and 50min).


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