9...a5 and the Injury of Preparation: Why 'Engine Blindness' Sells in the King's Indian Mar del Plata

One number from April 2026 is still written in red ink in my board-physiology notebook: four hours fifty-two minutes. At the Dhaka Premier Division Chess League I strapped heart-rate monitors onto six players and measured nine rounds across seven days. A 51-year-old grandmaster peaked at 138 beats per minute in a six-hour rook endgame; after round six a guest player had to be hospitalised for dehydration. Three print desks rejected the piece. In July I started my own newsletter.

In that study I failed to measure one load — the load that accumulates in the body before a player even sits down. The load of preparation, before the first move. It does not show up on a heart-rate monitor, because it lives in memory, not in the legs.

A commercial opening DVD's promotional text reached me some time ago. Title: "The hour of the seconds." Subject: the King's Indian Defence, Mar del Plata Variation, with 9...a5 recommended as Black's antidote to White's Bayonet Attack, 9.b4. The blurb claims that computers often do not know how to handle such complex strategic positions; that if Black knows what to do, things may quickly become dangerous for White; and that objectively, chances are equal.

I counted heartbeats in Paltan, and the numbers confessed more than the results did. This promotional text also contains a confession — and it testifies against itself. That is where today's diagnosis begins.

Mar del Plata: a closed centre, two wings, one preparation weapon

The King's Indian Defence is the most aggressive child of the hypermodern family. 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 — Black concedes the centre and strikes back with ...e5 and ...c5. The Mar del Plata is its sharpest branch: 7...Nc6 8.d5 Ne7. The centre closes: White's d5 against Black's e5. A closed centre means two wings for each side, and two different plans. Black breaks with ...f5 on the kingside; White presses on the queenside. This is the structure where every move is a decision and every decision is long-term.

This is where White's modern instrument appears — the Bayonet Attack, 9.b4. Direct queenside occupation, then b4-b5 to clamp Black's queenside counterplay, followed by Be3, Nd2 and g4-type expansion. The Bayonet emerged from the realisation that the classical 9.Ne1 or 9.Nd2 lines let Black equalise comfortably. The Bayonet takes that comfort away.

Black's answers are then limited. 9...Nh5 is the main line — the knight enters the argument directly, forcing lines appear, analytical density rises. 9...Ne8 is the older classical reply, more strategic, less sharp. And there is 9...a5 — the sideline this DVD sells as an antidote. Its logic is simple: before breaking with ...f5 on the kingside, fix the queenside pawn structure and contest the c5 complex. Counterweight first, attack second.

But there is a reality the blurb does not admit. 9...a5 gives White a freer hand on the kingside — exactly where the Bayonet's plans are directed. Black is settling the queenside while White is gaining space on the kingside. It is an unequal trade, and a conscious one.

The Bangladeshi context is unexpectedly relevant here

The title evokes seconds — the professional assistants who prepare openings for elite players. In Bangladesh that post barely exists. Niaz Murshed became a grandmaster in 2026, a year before Anand. In the four decades since, the country has produced five grandmasters in total and none after 2026. The Bangladesh Chess Federation's government support is roughly Tk 11 lakh a year, and after Standard Chartered's school chess programme ended in 2026 the last stretch of the pipeline dried up. In that situation, a club player in Dhaka prepares alone, at night, in front of a screen, without a second.

So what this DVD sells in Bangladesh is not merely a move. It is a promise: less to memorise. Where institutional support is absent, the call to reduce the memorisation load is the loudest thing on the shelf.

Diagnosis: four symptoms

Symptom one — "objectively, chances are equal." That is an evaluation, not data. No engine, no version, no depth, no game count, no average centipawn loss. My first rule in injury decoding: the tissue is the last witness, not the first suspect. Here the tissue is data. Without data, the claim must be treated as marketing copy, not analysis.

Symptom two — an internal contradiction. One part of the text says computers often cannot handle these complex strategic positions. Four sentences later it says that after the main line 9...Nh5, computer analysis becomes important again. The engine's competence is thus affirmed or denied depending on which move is being sold. That is a marketing-dependent frame, not an analysis-dependent one.

Symptom three — and the most serious. In the post-AlphaZero era, neural-network engines have overtaken humans in closed, strategic structures. What a Leela-type engine shows in a Mar del Plata position, a classical engine of ten years ago could not show. So "the computer doesn't know" is no longer merely wrong; it is obsolete rhetoric. If a buyer one day opens his own engine and sees the position evaluated precisely, the product's central differentiator collapses — and trust in the rest of the analysis collapses with it.

Symptom four — "very few concrete lines." The question is: whose lines are fewer? Black's decision tree is smaller. Not White's. White retains the b5 clamp, bxa5 to open the b-file, Ba3-Nd2-Be3 build-ups. Black still needs an answer to each. This is a reduction of memory burden, not an elimination of preparation.

What 9...a5 actually sells against the Bayonet

The real distinction to grasp is objective advantage versus practical advantage. 9...a5 does not claim objective equality; it claims an asymmetry of familiarity — Black knows the plan, White does not. That works on first exposure. It breaks on the second. In injury language, this is a strain, not conditioning.

In 2026 I watched more than three hundred hours of online chess over ten months — from the Magnus Invitational to the FIDE Online Olympiad, where Bangladesh's players competed from bedrooms. What my log showed: nine of twelve reported eye strain, five reported wrist pain, two reported leg swelling after six-hour sessions. I called it screen-board syndrome.

That data is relevant here because opening preparation today happens on screens. So "fewer lines" is not only a chess claim; it is an ergonomic claim — fewer hours, less repetition, less eye strain. To a club player that argument is the most attractive, and the least verified.

The blurb's real audience is the club player rated roughly 1800 to 2200 with limited preparation time. A 2600 professional cannot survive on a sideline without concrete backups, and no second would let him try.

The contrarian angle: the romance of load management

My long-standing position is clear — much of the romance around load management is a polite language for accommodating commercial calendars and friendlies. The same device is at work in chess preparation. "Fewer lines, more understanding" sounds good, but it does not remove load; it relocates it. Memory load falls, judgement load rises. And judgement load cannot be measured, so it stays invisible.

The empty stadium didn't reduce the load; it changed the load's address. During the pandemic the pressure moved from legs to eyes and neck. Here too: the pressure of memorisation moves to the pressure of evaluation. For a player with mature strategic judgement, that trade is profitable. For one without it, it is more dangerous — because the failure will be blamed on him, not the product, while the product states that precondition most lightly of all.

A second contrarian observation: the delivery channel is itself injured. Fixed-media opening courses belong to the instructional paradigm of the 2000s and 2010s. Today's paradigm is interactive and subscription-based — spaced repetition, platform-integrated courses, streamed lectures. The content is transferable; the vehicle is not. And because the vehicle lags, the text dates itself.

Third — single-point dependence. A repertoire resting on one low-density sideline has no redundancy. If White arrives prepared for 9...a5, Black has no second answer inside the product's scope. "Antidote" is the wrong word here: an antidote implies a cure, a sideline implies a diversion.

The title-content mismatch is also visible. "The hour of the seconds" evokes elite professional preparation; the body talks about club-level repertoire building. That is promotional inflation the text cannot carry.

Looking forward

The value of this product is not in the move but in the demand it has located. Amateur anxiety about preparation volume is the real market in chess instruction, and whoever can package it into a verifiable, interactive, engine-linked structure will win the next decade. 9...a5 may survive or vanish; the promise of "less to memorise" will remain.

The question is therefore not for the DVD's publisher. It is for us: do we want to reduce the player's load, or only to make the load invisible?