The Theory Tax and IM Valeri Lilov's Six Videos: What Is Really Happening in the Chess Opening Market

A Wednesday Evening in District 3

The chess club meets on the second floor of an old apartment block. Fourteen boards, twenty-eight players, one ceiling fan working at full speed. By 21:40 only three games remain. At board seven, a thirty-four-year-old player I will call H. stares at the position after move twenty-three. He has the black pieces. Across from him, a second-year university student pushed his e-pawn to e3, placed a bishop on f4 on move two, and has not made a single clear error in the twenty-three moves since.

H. loses on move forty-one. It is his fourth consecutive defeat against the same opening system in six weeks. He does not lose because he calculates poorly. He loses because he has no plan. Throughout the game he shuffles pieces by reflex, waiting for his opponent to blunder. His opponent does not.

On the ride home I think about something the amateur chess world calls, with an oddly economic name, the theory tax.

The Theory Tax: A Fee Nobody Collects, Everybody Pays

At the elite level, every player pays this tax consciously. They spend thousands of hours a year on the main branches of the Queen's Gambit, on the Slav, the Semi-Slav, the Queen's Gambit Accepted, the Orthodox Queen's Gambit Declined. That is the unavoidable cost of surviving in a region where one bad move on move fifteen can mean defeat by move thirty.

At club level, the tax stops making sense. A player rated between 1600 and 2100 does not need to know move twenty-two of a rare Semi-Slav branch. What that player needs is a plan for the first twenty moves and an understanding of where the pieces are going.

The gap between those two needs is the fertile ground on which an entire opening-content industry grows. It is also the ground where marketing claims most easily inflate.

One promotional document I have in hand describes the phenomenon fairly clearly. It states that many White players skip 2.c4 to avoid the heavy theory of the Slav, the Semi-Slav, the Queen's Gambit Accepted and the Orthodox Queen's Gambit Declined, steering instead toward system openings. The description is accurate as a phenomenon. The problem is that it has never been backed by data.

Over thirteen years of watching chess, I have repeatedly seen coaching seminars in Vietnam and abroad present exactly this argument without a single table. No win rate, no draw rate, no database sample, no average centipawn loss. Only a feeling.

Feelings have value in chess. But when a feeling becomes the foundation of a paid product, it needs independent verification.

Seven Systems, One Promise

London System. White plays 1.d4, brings the bishop to f4 early, builds e3, Nf3, Bd3, sometimes c3. The core idea is to minimise theory while keeping a solid position. Its strength is repetition: the same setup almost regardless of Black's reply. Its weakness is tempo — White spends three or four moves completing the structure, and a Black player who knows how to open the kingside early can seize the initiative.

Colle System. Named after the Belgian Edgar Colle. White builds 1.d4, 2.Nf3, 3.e3, 4.Bd3, 5.c3. The strategic core is an e4 or c4 break at the right moment, creating a sudden explosion from an apparently gentle position. Colle was dismissed for decades as an inferior player's opening. That assessment is outdated. At club level it retains real venom, especially when Black is unprepared for a single central break.

Torre Attack. White plays 1.d4, 2.Nf3, and after Black chooses e6 or g6, puts the bishop on g5. It is a waiting system, applying light pressure on Black's f6 knight, usually leading to a balanced but uncomfortable position. Torre rarely produces a large advantage. It produces discomfort.

Trompowsky Attack. 1.d4 Nf6 2.Bg5. A surprise on move two, immediately questioning Black's structure. Trompowsky forces Black to decide early, and in many cases forces the exchange of a bishop pair or a distortion of the pawn structure. At club level it is among the most efficient weapons per hour of memorisation.

Catalan. 1.d4 Nf6 2.c4 e6 3.g3. A kingside expansion, bishop to g2, long-term pressure on Black's centre. The Catalan is a strategically deep opening, not a theory-avoidance trick. It demands that both sides understand pawn structures and the timing of transformations.

Blackmar-Diemer Gambit. 1.d4 d5 2.e4 dxe4 3.Nc3. A pure club-level gambit, rarely seen at elite events. White sacrifices a pawn for tempo and diagonals. If Black knows exactly what to do, the gambit is neutralised within about fifteen moves. If Black does not, he is swept away and loses within thirty.

Richter-Veresov Opening. 1.d4 Nf6 2.Nc3 d5 3.Bg5. A hybrid system combining Trompowsky ideas with an Nc3 structure, producing a flexible position where White can shift into several setups depending on Black's response.

Seven systems. Six videos. That is the whole equation the promotional document asks the reader to accept.

London, Colle, Torre, Trompowsky and the Question of Danger

The document describes this group as "extremely dangerous". That phrase is right in one sense and wrong in another.

Right in this sense: these systems carry high practical venom at club and intermediate level. The reason is concrete. Black usually has no plan. In a main Semi-Slav branch, Black can lean on centuries of accumulated theory, tens of thousands of model games and an enormous database to consult afterwards. In a London System game, Black enters a region where theory is far thinner and must construct a plan at the board.

The cognitive burden reverses. In main lines, the player who remembers more wins. In sidelines, the player who understands faster wins.

Wrong in this sense: calling the group "extremely dangerous" without data is a marketing statement, not an analytical conclusion. These systems are objectively less critical than main lines. A less critical system cannot be both "extremely dangerous" and easily neutralised by one correct plan. Those two propositions partly exclude each other.

A more neutral formulation would be: this group is dangerous for unprepared Black players and relatively harmless for prepared ones. That is precisely the condition any training product needs in order to exist.

Six Videos and the Breadth-versus-Depth Equation

Six videos. Seven systems named in the main description, plus others mentioned in an extended section. Counting avoided lines, the list can reach eight or more.

Proper club-level opening training videos typically run from forty minutes to an hour and a half. If the total length of six videos lands between four and six hours, each system receives roughly thirty to forty-five minutes.

Thirty to forty-five minutes is not enough to go deep into Catalan pawn structures. Thirty to forty-five minutes is reasonable for Richter-Veresov, which is thinner theoretically.

This leads to a testable conclusion: the product tends to favour breadth over depth. That is a perfectly valid design choice. Buyers simply need to know what they are buying.

The core promise is "a relevant plan for Black for each single opening". The word "plan" matters. The product does not promise a comprehensive theory set, and if it did, that promise would be impossible to keep in six videos.

IM Valeri Lilov: The Correct Placement of a Coach

The document introduces Valeri Lilov as a Bulgarian International Master and coach. No rating is provided. No tournament record. No coaching credentials beyond the title.

International Master is the second-highest lifetime title in the world federation system, behind Grandmaster only. It is a genuinely impressive level, requiring strict norms at international events and a minimum rating sustained over time.

But in the opening-content market, that title places the holder on a specific tier. Above him sit Grandmasters with deep single-system courses. Below him sits an ocean of free video content.

An IM-level coach is a suitable choice for club and intermediate audiences — strong enough to understand problems deeply, close enough to learners to know where they get stuck.

What is not supported is any inference that the product's authority comes from a Grandmaster source. The document makes no such claim, and we should not add one.

When the Board Refuses to Follow the Headline

The document carries a headline about an interview with Timur Turlov. The content inside is about Valeri Lilov's six-video course. Timur Turlov appears in no information point within the content. Valeri Lilov appears nowhere in the headline.

Two names from two different stories in one document. This is a serious information-integrity signal, and I rank it as the highest risk the document creates. A headline orients the reader. If a reader clicks expecting an interview and receives a product pitch, trust is damaged — not trust in the product, but trust in the publisher.

Three explanations are plausible. First, an extraction error, where a portal page's main headline sat above a promotional block and automatic extraction merged them. Second, a branding issue, where a figure linked to chess sponsorship appears as a brand anchor for someone else's product. I mark this low-confidence, because it rests on knowledge external to the document. Third, an editorial error, a headline assigned to the wrong article in the same content campaign.

I cannot choose among them. What I can say is this: anyone using this document as a reference must verify the full text first.

Classification Errors Inside the Description

The document describes the whole group as arising after 1...d5. That is true of only part of the list.

Trompowsky begins 1.d4 Nf6 2.Bg5. The move 1...d5 never appears. Torre begins 1.d4 Nf6, with 2...e6 or 2...g6 depending on the variation; 1...d5 is not mandatory either. The Catalan includes 2.c4 — precisely the move the document says White is trying to avoid.

Three contradictions in one descriptive passage. This does not mean the systems do not exist or are not worth studying. They exist and are worth studying. It means the document organises openings by marketing instinct rather than theoretical rigour.

The Market: A Four-Tier Picture

At the top sit Grandmaster-authored courses tied to large distribution platforms, often with interactive training systems. This is the most expensive and most academically credible tier.

The second tier holds titled trainers below Grandmaster level — Valeri Lilov's tier. Products here are more flexible, cheaper, and target a specific gap the top tier ignores.

The third tier holds club-specific courses designed to solve one narrow practical problem. The product in this document sits at the boundary between tier two and tier three.

The fourth tier is free content. Thousands of videos, millions of articles, countless annotated games. This is the real competitor to every paid product, and the reason positioning is so hard.

In that structure, the competitive advantage of a six-video course lies not in raw analytical quality but in curation and the promise of a plan. Buyers do not pay for information. Information is everywhere. They pay not to have to search for it.

The Contrarian Angle: Is a Plan Actually Worth Paying For?

Here I want to argue against my own scepticism. There is a strong case for the plan-based approach. In club chess, the most common cause of defeat is not a lack of opening knowledge. It is disorientation on move fifteen, when the opening ends and the middlegame begins without a bridge.

A player who knows twenty main-line branches but does not know where his pieces go on move fifteen will lose to a player who knows only seven moves but understands the plan that follows. If that premise holds, a product that spends its whole runtime on plans rather than theory is a correct design choice, not an omission.

The value of a player is not on a price sheet. It is in the fate of those who dare to choose a road few travel.

There is a limit, though. A plan in chess only has value when tied to a specific pawn structure. A generic London System plan collapses the moment White picks a different move order. Across the seven named systems, the number of distinct pawn structures is enormous. That is why I keep returning to depth. Breadth has introductory value. Depth creates lasting value.

How to Read a Chess Promotional Document

First, separate headline from content. If the two concern different subjects, flag the document as needing verification.

Second, count claims accompanied by data. If the ratio approaches zero, file every claim favourable to the product as advertising.

Third, check the listed systems against standard move orders. Contradictions lower your estimate of rigour.

Fourth, identify the instructor's title and match it to your own needs. An IM is sufficient for club level.

Fifth, estimate total runtime and divide by topics. The result tells you the depth you will actually receive.

This procedure requires no advanced chess knowledge. It requires the habit of asking questions.

Why This Story Matters More Than It Looks

A promotional document for a six-video course on Black's openings sounds small. It touches no world championship, no elite match, no ranking list.

But it touches a bigger question: who is teaching chess to millions of amateur players worldwide, and how.

In Vietnam, the chess movement has a proud foundation — strong young players, a school tournament system, active clubs. Yet most amateur players learn from foreign content, much of it commercially promotional. That places a responsibility on those who write about chess in Vietnamese. We need more than technical tutorials. We need writing that helps readers distinguish a marketing claim from an analytical conclusion.

I have seen a generation ready to press, and I believe they will never retreat. But pressing on the board demands something different from enduring pressure when choosing study material.

What Will Change

Production costs for video content keep falling. More titled instructors keep entering the market. Competition from free content keeps compressing margins. In such a market, value shifts from raw analysis to curation, branding and distribution. A course does not win by containing more information than free content. It wins by saving the learner search time.

That is a reasonable shift, and it raises the bar for buyers. Buyers need to know whether they are paying for convenience or for expertise.

What Still Needs Verification

I could not confirm the full original text. I could not confirm the identity of the subject named in the headline. I could not confirm the instructor's current rating. I could not confirm the total runtime of the six videos. I could not confirm the price.

Each item could shift my conclusion. An honest analysis must leave room for those possibilities. That is also why I do not call this document bad. I call it unverified.

Conclusion

Back to board seven in District 3. H. still plays every Wednesday. He still loses to the London System. But last week he told me he had started writing down what happens after move fifteen in every lost game, and he noticed something. In his last seven defeats, he did not err in the opening. He erred on move seventeen.

That is a small realisation, and it required no course. But it is the kind of realisation every decent training product should aim to produce. I do not believe in a silver bullet for the opening. I believe in a habit that can change everything: the habit of asking where the source is.

Where is the source. Which numbers. Who measured. For how long. On how many players. If a training product answers those questions, it deserves the buyer's money. If it does not, the buyer may still purchase — but should know he is buying a plan, not a truth.

In the summer of Russia 2026, I went looking for queens whose names were not on the map. The board is the same. Moves dismissed today can be the centre of tomorrow's theory. And claims without sources will always need someone to re-read them tomorrow.