Six videos, eight systems and a misplaced name: inside IM Valeri Lilov's non-critical d4 repertoire for Black

The headline names Timur Turlov. The body never mentions him once. What sits beneath it is a pitch for a six-video package by IM Valeri Lilov, a Bulgarian international master, teaching Black how to meet the d4 sidelines that White chooses in order to dodge main-line theory: the London System, the Colle System, the Torre Attack, the Trompowsky Attack, the Catalan, the Blackmar-Diemer Gambit and the Richter-Veresov Opening.

In newsroom terms, a headline about one subject sitting above a body about someone else's product is a serious failure. A reader clicks expecting a conversation and receives a sales page. For an analyst, though, that mismatch carries its own value: it reveals how much verification the whole document deserves. When the opening is already skewed, everything after it must be read with suspicion.

The document sources almost none of its data points. No sample games. No win rates. No move-quality metric. No rating for the instructor. For a technical claim about opening preparation, that is far too thin a file to count as evidence.

The theory tax and the players who dodge it

After 1.d4 d5 2.c4, Black holds the Slav with 2...c6, the Semi-Slav, the Queen's Gambit Accepted with 2...dxc4, and the Orthodox Queen's Gambit Declined with 2...e6. Four branches, each a library thousands of pages deep, and White has to know nearly all of it to claim the smallest edge. At club level, most players simply do not have that time. They take the other road: they skip 2.c4 entirely.

This is the mechanism coaches call the theory tax. Amateur players are not weak at calculation; they are weak at retention. A 1600-rated player can calculate ten moves deep without difficulty and then collapse on move eleven inside a Semi-Slav line he has never read. Avoiding theory is a rational response to a badly unbalanced cost structure.

System openings exist to serve that response. The London, Colle, Torre and Trompowsky are all built on the same principle: build the structure first, calculate later. They create no theoretical edge, but they produce something more valuable to a club player — a reusable plan.

Lilov's six-video package targets exactly that demographic, from the opposite side. White dodges theory; Black does not want to memorise four system openings either. The course's promise is narrow and clear: one plan for Black against each opening.

Based on my own experience following games, that number deserves emphasis. Four years commentating chess for VTC, then long evenings in clubs around Shanghai, taught me a recurring pattern: in amateur events, nearly half of all games leave main-line theory inside the first ten moves. At elite level, that figure is close to zero. Two worlds play two different games under the same name.

One detail rarely enters this conversation. At an open women's event in Shanghai in 2026, I watched a seventeen-year-old play the London System in seven consecutive games. She had not chosen it because it was strong. She had chosen it because it was the only thing she had been properly coached in. The value of an opening sits on no price list; it sits in the fate of the people brave enough to play it. When coaching resources are distributed unevenly, the same system can be a tactical choice for one player and a ceiling for another.

Inside seven systems: what is actually hard

The London opens with 1.d4 and an early Bf4, followed by e3, Nf3, Bd3, c3 and a compact structure. For Black, the difficulty lies not in building a formation — anyone can build a formation — but in move order. If White plays 2.Bf4, Black can counter on the queenside with ...c5 and ...Qb6 aimed at b4, forcing White to choose between castling long and conceding structure. If White plays 2.Nf3 before Bf4, the rhythm changes completely. Any Black plan that fails to distinguish those two orders is half a plan.

The Colle is slower: 1.d4 d5 2.Nf3 Nf6 3.e3, aiming to push e4 under favourable conditions. Black's equalising route usually runs through ...c5, striking the centre before White completes development, or through accepting a symmetrical structure and shifting to a waiting game. The Torre Attack, 1.d4 Nf6 2.Nf3 e6 3.Bg5, poses a pinning problem where Black must decide whether to break the pin with ...Be7 and ...h6 or to concede the bishop pair for a tempo.

The Trompowsky, 1.d4 Nf6 2.Bg5, is a pure theory-avoidance tool. It attacks Black's structure instead of contesting the centre, and Black typically answers with ...Ne4 or ...d5 depending on appetite for an unbalanced position. The Richter-Veresov, 1.d4 Nf6 2.Nc3 d5 3.Bg5, sits in the same logical family: hold the centre, develop the bishop early, make Black solve his own problems.

The Catalan and the Blackmar-Diemer Gambit represent opposite extremes. The Catalan, 1.d4 Nf6 2.c4 e6 3.g3, is a serious positional system with real theoretical depth. The Blackmar-Diemer, 1.d4 d5 2.e4 dxe4 3.Nc3, is a club-level gamble where Black can take the pawn and try to hold or decline and transpose into normal chess.

Here a notable technical problem surfaces. The framing of the document places everything after 1.d4 d5 and explains the popularity of these systems by White avoiding 2.c4. But the Trompowsky and the Torre do not arise from 1.d4 d5 at all — they arise after 1.d4 Nf6. The Catalan contains 2.c4 itself. The logical scaffolding contradicts itself, a sign that the opening taxonomy here is promotional rather than rigorous.

Six videos for seven or more systems. That division alone answers most questions about depth. The genuine value of a package like this lies in curation, not in analysis: it sells tidiness, and tidiness always carries a price. No move-quality metrics, no database samples, no verification games. A plan earns the name only when it survives the board, not a landing page.

The contrarian read: what gets called dangerous

The document describes the London, Colle, Trompowsky and Torre as extremely dangerous. Directionally, that holds up. System openings genuinely wound at club level, because Black usually has no prepared plan and gets steered into positions he has never studied. But the claim is quantified by nothing: no win rates, no comparative samples, no illustrative games.

The gap between a claim that points the right way and a claim backed by evidence is where marketing operates. Calling an opening dangerous sells more courses than saying it forces Black to think independently on move eight. The difference between those two sentences is the difference between information and advertising.

Market context matters here too. The instructor is an international master, not a grandmaster. That is ample authority for amateur and intermediate audiences, but it does not create competitive advantage in elite coaching, where grandmaster-authored repertoires and large platforms dominate. Below that sits an ocean of free content, where any anti-London plan can be found in three minutes of searching.

In chess, the only boundary is skill. The market draws different boundaries: distribution, branding and trust. A six-video course does not win by analysing more deeply than free material. It wins if it saves the learner time, and time is the one thing club players genuinely lack.

That is why the verdict has to split in two. Technically, this is a reasonable product meeting a real need for a specific audience. As an information source, it is not reliable enough to cite.

The real risk is nowhere near the board

The biggest risk in this document has nothing to do with openings. It lies in verification. A name appears in the headline and vanishes from the body. Multiple data points carry no source. Every claim favourable to the product originates with the author or the vendor.

When a piece is simultaneously editorial content and a distribution channel for a commercial product, it should be read as sponsored material even without a label. This is a structural feature of chess's content economy, not a personal failing. Titled players below the very top earn a living filling gaps created at club level. That is an honest trade. It becomes a problem only when readers confuse professional authority with commercial authority.

For readers, the handling is simple. Treat every product claim as marketing until independent data appears. Check the instructor's title and rating against official databases. And for this specific document, verify the full text before citing it, because headline and body may belong to two different articles.

I went looking for plans that appear on no theory chart, and I found them in chess clubs everywhere. They are not inside six videos. They live in amateur games, where a forty-year-old plays the London because it is the only opening he can play without opening a book. The question worth asking is not which course teaches better, but why an intellectual sport still forces its players to choose between studying and playing. When that answer changes, this entire content market will have to rewrite itself.