9...a5 and the Advertising of 'Equality': A Ledger of an Opening Promise Without Proof

Last month a promotional text for a King's Indian Defence (KID) DVD landed on my desk. It paints one specific position — White's Bayonet Attack in the Mar del Plata Variation, the reply 9.b4 — and recommends 9...a5 for Black. With it comes a sentence I have heard in a dozen halls across two decades: “computers do not really understand these complex strategic positions.” Yet the text carries no engine evaluation, no sample game, no database statistic, not even an author attribution. The title says “ChessMom”, mothers on and off the board; the inside is a King's Indian repertoire. I learned the press room by counting what no one asked. Here nobody asked: where is the evidence?

Let me set the board first. The King's Indian begins 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 — a hypermodern defence where Black deliberately concedes the centre and strikes later with ...e5. In the Classical branch, 7...Nc6 gives us the Mar del Plata Variation: White storms the kingside, Black the queenside. It is one of the most bipolar and sharpest systems in chess, two players running at each other with knives.

Against this system White has a fashionable weapon: the Bayonet Attack, 9.b4. It squeezes Black's queenside expansion (...c5, ...b5) before it starts and firms up White's pawn on c4. Since the 2010s the line has been played heavily at elite level; the result is a huge memorisation burden for Black. In the DVD's own words, the Bayonet “interferes with Black's ideas”, and “computer analysis becomes important again”.

That is where the whole sales strategy becomes visible. The main line 9...Nh5 opens the position and produces forced, tactical, calculation-heavy play — a contest of memory and engine preparation. The DVD chooses 9...a5!?, where the author claims a sound position with “very few concrete lines”, shifting the emphasis from tactics to strategy. In short: less memory, more understanding; a practical, anti-computer sideline.

Opening theory is a market with its own economy. Every transfer rumour is a hypothesis; the medical is the p-value. Repertoire marketing follows the same rule: the advertising language is the hypothesis, independent engine verification is the p-value. When a main line becomes so heavily analysed that a club player cannot hold the preparation, sidelines get repackaged as “antidotes”. This cycle is not new. 9...a5 is not a novelty — it is a known, established sideline that fights for ...a4/...b5 space and avoids the forcing ...Nh5 lines. The DVD is probably selling old theory in new packaging.

The second problem is packaging. The title says “ChessMom returns: Supporting mothers on and off the board”. But not one of the fourteen information points mentions a mother, a female player, or a community project; all of it is a Black repertoire DVD. That mismatch between title and content is a data-quality flag. It is probably series branding — a persona-driven product line — unrelated to this specific DVD. A product whose own title does not recognise its content: how credible is its evaluative claim?

Back to the board. The 9...a5 idea is not unreasonable. It takes queenside space, offers Black a long-term strategic plan, avoids an immediate tactical clash, and works as a low-memorisation repertoire. But the DVD's central claim is unproven: “objectively chances are equal”, and with Black knowing the plans, “things might quickly become dangerous for White”. That is practical-versus-objective framing — a classic repertoire-marketing device, not an established evaluation. No engine score, no win rate, no sample games. What is missing is the evidence.

The second claim is weaker still. “Computers do not understand these complex strategic positions” is effectively anachronistic in the engine era. Modern engines handle the closed positions of the KID well. This sentence is rhetoric, not a technical claim. The comfort of blaming the engine is marketing, not analysis. Without engine verification, comparing 9...a5 with 9...Nh5 rests on belief alone.

So who is this product for? My reading: club-to-IM level Black players who lose time in forced main-line preparation — not elite GMs, who already know both lines. For that audience 9...a5 is a legitimate, usable sideline idea; a low-memory line helps in fast time controls. Yet the real caution sits here: the value of a sideline depends on your own understanding. The DVD does not supply proof; it supplies confidence. And confidence alone does not hold a board.

I have three criteria for pricing a repertoire product: a verified engine score, the line's actual results in a current database, and the producer's clarity. This DVD gives none of the three. It gives a story instead — the story of escaping the main line. A story can start learning, but it is not the end of preparation. A preparation that cannot explain its own weakness collapses in the 89th minute; I trust a system that can explain its own failure in advance.

Here the Bangladeshi dimension matters most to me. In 2026 Niaz Murshed became South Asia's first grandmaster — a year before Viswanathan Anand. India then built more than eighty GMs; we have gone seventeen years without a new one. This is not a talent drought; it is a sponsorship drought. The Bangladesh Chess Federation's annual budget is roughly eleven lakh taka; in 2026 Standard Chartered's school-chess programme died; no corporate patron arrived. A federation that cannot afford to hire one second can still let a player buy a 9...a5 DVD — but that builds no pipeline. The empty stadium taught me that noise is a variable, not a truth.

In Batumi, at the 43rd Chess Olympiad in 2026, I charted Bangladesh's eleven rounds and forty-four games inside a 180-team field across 212 notebook pages — nine dispatches nobody in Dhaka had commissioned. A notebook in Batumi can hold a World Cup if you fold it right. In Chennai, at the 44th Olympiad in 2026, a record 188 open teams and 162 women's teams played; 78-year-old Rani Hamid scored 3/7 on board one against players four decades younger. Two continents, one question: which federation paid for preparation, and which only paid for the flight?

Now the contrarian angle. The easy line is that the DVD is inflated advertising and that is the end of it. The real blind spot is more uncomfortable: in the chess periphery we treat repertoire products as a substitute for a pipeline. Buying 9...a5 feels like preparation is finished. But the void left by the death of Standard Chartered's school chess, the crisis of an eleven-lakh budget — no DVD fills it. The opposite is also true: the sideline may genuinely work, and the fault lies in the buyer's expectation. Advertising language is not proof, and our real problem is believing without verification.

The third layer of the blind spot is product culture. A DVD is a legacy distribution channel, eroding under subscription courses and streaming platforms. When packaging moves faster than substance, a gap between title and content becomes inevitable — the “ChessMom” title is evidence of that gap. In a market where branding outsells substance, the word “equality” is not analysis; it is product.

At industry level the impact is small and local. One DVD changes no event and no player; it is a minor ripple in the opening-content market. The repertoire arms race on online platforms gets slightly richer, and that is all. Claiming a bigger effect would be exaggeration.

Looking forward, two things are worth watching. First, whether 9...a5 returns to elite practice — if GMs play it against the Bayonet in TWIC or ChessBase databases, the sideline gains legitimacy; if the engine shows 9...Nh5 is clearly better, the product's core claim does not hold. Second, in Bangladesh: at the next match, ask again who paid for whose preparation. Because a result without a budget is only a rumour.