Seven Opening Systems, Six Videos and the Catalan Crack: Inside the Club-Level Chess Course Market

For the third night in a row, a position refused to leave my head. On the board was a game by an A-class club player in Chiang Mai, holding Black after 1.d4 d5. He had spent months preparing the Slav Defence. His opponent did not play 2.c4. His opponent built the London System — Nf3, Bf4, e3, c3, Bd3, Nbd2 — and over the following forty moves he never found a plan of resistance. He lost, not because he was attacked, but because he was abandoned in a position with no map. Not the move, but the gap before the move is made. That moment was not an individual defeat. It was the structure of a market. And when I read an analysis of a chess instructional video product, I realised I was not reading news. I was reading a sales page — but a sales page, sometimes, reveals more about the chess industry than a tournament report. In twenty-three years of watching the chess world, I have never seen the flow of opening content as dense as it is now. The explosion of online learning platforms, free engines and streaming culture has created a new class of player: club-level competitors who lack the time to study long theoretical lines but have a hunger to win. They choose low-memorisation systems — London, Colle, Torre, Trompowsky. And as more White players take that road, demand for an answer with Black multiplies. The product I analysed sits exactly in that gap. It is a six-video course, presented by an IM of Bulgarian origin, promising a plan for Black against every system White can build. Seven systems are named: Colle, Trompowsky, Torre, London, Catalan, Blackmar-Diemer Gambit and Richter-Veresov. The product's framing is after 1.d4 d5 — Black actively chooses the classical Queen's Defence, then meets every variation with which White dodges mainline theory. It sounds reasonable. But this is exactly where I found the first crack. The spatial map here is not on the board. It is in the structure of the product. The asymmetry of difficulty across the seven systems is the largest technical problem, and it is hidden by the product's packaging. The Colle System and the Torre Attack can be handled by a plan plus about a dozen concrete moves. The Trompowsky and the London demand accuracy against ideas such as an early c5, Ne4, h6, or the trade of the dark-squared bishop. But the Catalan — 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 — is not a sideline. It is a theory-dense mainline, ECO E00-E09, and it forces a decision about Black's entire opening capital: the Open Catalan with dxc4 and b5/Bb4+, or closed structures with Nbd7/c6/b6. Six videos. Seven systems. One of them demands a larger body of theory than the other six combined. That arithmetic does not match, and it is a structural signal rather than a minor flaw. When a product claims to cover seven systems in six videos, almost certainly at least one system is compressed, or at least one video must bundle two systems. The likeliest suspects are the Catalan, the Blackmar-Diemer or the rarest pairing. The second problem is subtler: move order. The proper Trompowsky — 1.d4 Nf6 2.Bg5, code A45 — arises before Black commits to d5. A frame beginning 1.d4 d5 produces a different, loosely-named line, 1.d4 d5 2.Bg5. Grouping both under one category is not wrong as advertising, but it blurs a real move-order decision. At club level this may not matter. At 2200+, it is the difference between a working repertoire and a leaking one. The third problem is taxonomy: the Blackmar-Diemer Gambit is a romantic gambit — 1.d4 d5 2.e4 — not a quiet system. Placing it beside the Colle and the London mixes two entirely different strategic categories. A buyer reading the list of seven systems will assume all seven are treated equally. In reality, that is almost certainly not the case. I once coded 380 Thai League matches to write a 120-page report, and what I learned from it is this: quantity does not mean depth. In 120 pages of reporting, I found what the season never recorded: repetition. Here too — seven systems in name, six videos in fact, and one system carrying the theoretical weight of an entire mainline opening squeezed into a fraction of the product. As for the author: IM Valeri Lilov, a Bulgarian trainer. No rating data, no activity record, no sample games, no engine match rate, no ACPL. That is not the author's fault — it is the product's information gap. But in the opening-content market, an author's title functions as a positioning signal. An IM course typically targets improving club players; a GM repertoire with engine verification typically targets the 2100+ band. This product sits in the first tier. That is not a downgrade — it is a classification. The point I want to stress: this course approaches through plans, not lines. The product's own description — demonstrating a plan for Black against each system — places it in the pedagogical category, not the opening-innovation category. For club players, plans are often more useful than lines. But it must be said plainly: a plans-based course cannot replace a theoretical reference work. Buyers need to understand what they are buying. Here the central paradox of the marketing appears. The same text both asserts that White's approach is unambitious and that these systems are extremely dangerous. Those two statements do not contradict each other in chess terms — but they are misread by the ordinary buyer. The danger is not an objective White advantage. The danger is drift risk: White gets a riskless game, while Black, lacking the characteristic plan, drifts as White accumulates. It is danger of drift, not danger of being worse. A buyer who reads the claim as an assertion of objective strength will miscalibrate his expectations. On the product's value to club players: the pain is real. A Black player without a plan genuinely loses to the London and the Trompowsky. And most of the opening-content market still prioritises theory first and plans second. That is a durable gap, and this product fills part of it — most effectively, perhaps, in the London and Trompowsky modules, where plans-based teaching genuinely closes the largest knowledge gap. Every plan is a hypothesis until the pieces move. And the hypothesis here has an execution blind spot: its effectiveness depends on the opponent also playing plan-chess. Against an opponent prepared with a concrete Catalan or Trompowsky, the course's plan layer thins quickly — especially under fast time controls, where memory of forcing lines dissolves far faster than memory of structure. There is another gap I observed from the outside. A Black repertoire built on the 1.d4 d5 frame and sideline plans will miss systems that reach the same structures by another route. The most notable is the Jobava-Prie London — 1.d4 Nf6 2.Nc3 d5 3.Bf4 — one of the most popular modern anti-establishment systems at both club and GM level. And g3/Bg2 setups without c4, the pseudo-Catalan, are also absent. This is a genuinely important gap when building a complete Black opening set. So where is the largest risk? Not in content quality. It lies in expectation calibration. The packaging encourages buyers to overvalue these sidelines relative to the 2.c4 mainlines that the product itself admits it is avoiding. The second risk is depth allocation: seven systems, six videos, and one system demanding ten times the volume of the others. The third is obsolescence: a product without a clear release date may be a re-release of an older recording, and Trompowsky or London theory from 2026 is not entirely valid in 2026. There is no refereeing issue, no governance dispute, no cheating scandal involved. This is not the Niemann or Carlsen story. This is the story of a repertoire economy flourishing at club level, where IM-level authors monetise plans against low-theory opening systems. The transmission mechanism here is demand-pull, not supply-push. The club meta has shifted toward low-theory systems, and instructional content follows that shift rather than creating it. This means the product cannot be breaking news. It is one piece of a long-term picture. And like every piece of a fragmented market — many small authors, no dominant brand, low switching costs — its value will compress over time as AI tools lower the cost of content production. What is worth discussing is not whether this course is good or bad. What is worth discussing is how its structure exposes the way the chess industry operates at club level. The spatial map never lies — it only exposes what we want to believe. And when a Black player buys a course in the belief that seven systems will be fully resolved in six videos, he is buying a belief, not a repertoire. If I must offer a forward-looking judgement for the period ahead: this product is useful as a starting point, not an endpoint. Players should verify it by checking the table of contents before buying — particularly the depth of the Catalan module and the presence of the Jobava-Prie London. And if the course genuinely works in the London and Trompowsky modules, the question worth asking is: would an accompanying complete mainline reference turn it into a two-part system? That is the question the next game on the Chiang Mai club player's board will answer on behalf of all of us.