9...a5 in the King's Indian Mar del Plata: Antidote or Marketing Trap?

A rainy night in Da Nang, and I opened a file sent over Telegram. The filename read "Samarkand R2 (open) — all top teams grab wins despite close calls." I clicked. Inside there was no Samarkand, no second round, no teams. Just one dry move, repeated over and over: 9...a5. A chess DVD. A sales pitch.

I stared at the screen for a few minutes. The two pieces sat crooked, like two letters from two different people slipped into the wrong envelope. I had felt this before. In 2026 in Moscow, I found the story of a nineteen-year-old Yemeni student in the volunteer zone of Luzhniki, not on the VIP stand. In 2026 in Tokyo, I had to watch Karsten Warholm's 400m hurdles twenty times before I understood the rhythm of his strides. The truth usually lives where two pages do not match.

This is a small chess story. But hidden inside it is an entire opening-theory market, a battle between humans and machines, and a deceptively simple question: how can an old move be resold?

The King's Indian Defense is a classic hypermodern system: Black concedes the center, then counterattacks. Within it, the Mar del Plata is the sharpest branch, where Black plays ...e5 and ...Nc6 and both sides race to attack on opposite wings. The ECO code sits around E97 to E99.

Through the 1960s and 1980s, the Mar del Plata was a weapon for players who liked fire. But once computer analysis became universal, the system receded. The board opened, the forcing lines multiplied, and intuition lost ground. The King's Indian did not vanish. It simply moved from the front line to the fringe — where the faithful return whenever they need a tactical shock.

Then came the Bayonet. The move 9.b4, a White bayonet thrust, grabs queenside space and turns the position into a memorization exercise. Black faces the familiar choice: 9...Nh5, the main move, strong but opening the board and dragging both sides into engine territory; or a different road.

In that gap, the opening-theory market speaks up. This is one of the steadiest — and least glamorous — revenue streams in chess: selling "answers to popular lines." A ChessBase-style Fritztrainer, an online course, a paid database. Buyers are mostly club players, the curious, people who want a "weapon" up their sleeve. A transfer market is a symphony; the numbers are only notes — and in chess, those notes are usually called "anti-dotes."

The core of what this DVD sells is not a new move, but a change in the character of the game. After 9...Nh5 the board opens, the lines become forcing, and the engine retakes control. After 9...a5, Black no longer tries to settle the game with a precise sequence; he shifts into a closed, flexible position where the player can "think for himself." That is the promise: less memorization, less machine dependence, more room for the human.

At first hearing, that promise is seductive. Anyone who plays chess knows the fatigue of memorizing twenty moves of a forcing line. But when the promise is placed on a technical scale, several problems appear.

First, 9...a5 is not an invention. It is a secondary branch that has been known in opening literature for a long time. It appears in databases, it has shown up in top-level games. There is no novelty here. What the DVD sells is packaging, not discovery. Theoretically, 9...Nh5 remains the main move. The place of 9...a5 is second — an alternative, not a revolution.

Second, the claim that the sides are balanced ("chances are equal") is a positional statement, not a claim of theoretical superiority. Black gains nothing on the board after 9...a5; Black simply switches to a different type of game. If the buyer understands that correctly, the product has value. If the buyer expects an "antidote" that lets Black hold a draw easily, the expectation has outrun theory.

Third — and this is the most debatable point — the DVD argues that "computers often do not know how to handle the complex strategic positions arising after 9...a5." The writer of this advertisement is living in a bygone era. Before AlphaZero, the claim had merit. Classic engines like older Stockfish, Fritz, and early Rybka handled closed King's Indian positions clumsily. But after AlphaZero and the neural-network generations like Leela and Stockfish NNUE, long-term strategic King's Indian positions are evaluated with astonishing accuracy. Modern engines are no longer puzzled by 9...a5.

That does not make the DVD useless. But it does mean the product's anti-engine argument is at least five years out of date. And an out-of-date argument, even if half-right, is still a weak one.

When I say "weak argument," I do not mean the buyer. I mean the product's standing in the market. There is a familiar paradox in the opening-theory market: the more a product promises, the easier it is to overtake. Because the branch 9...a5, once it becomes fashionable, breeds a White response. Once White prepares, he finds counterplay. And at that point, the "antidote" becomes a trap for the very side holding it.

I have seen this mechanism in other sports. In basketball, a team finds a new way to defend a system. At first it works. Three months later, opponents adjust. Six months later, the whole league has learned to cope. In athletics, a new technique appears, shocks for a season, and is normalized. Chess is the same. Its theoretical cycle is just shorter and quieter. No sports bulletin reports that an opening branch has been neutralized. But it happens, daily, across thousands of boards.

There is another detail worth noting. The whole promotional document never names the DVD's author. No grandmaster is named, no personal record in the King's Indian is cited, no sample game is shown. This is a serious deficiency in verification. In a market where author credibility is the core asset, hiding the name is a signal — either the writer is not famous enough to sign, or the product trusts marketing more than expertise.

And then there is the title problem. The file I opened read "Samarkand R2 (open) — all top teams win despite close calls." Samarkand is in Uzbekistan, a country with a long chess tradition. "R2" suggests round two, "open" suggests an open event, "top teams" suggests a team tournament. Every marker points to a team-style sports report. But the content inside talks about a DVD. Two unrelated documents were mispaired. In journalism, this is a serious error. It means: if you re-read this headline on some news site, you cannot cite it as a source.

I lived through something similar while making the podcast "Empty Stadium — the People Never Named" during the 2026 pandemic. Once, I recorded 48,000 downloads in three days for the episode about Nguyen Huy Hoang swimming in the Gianh River, and nearly added another figure — one I later discovered belonged to a different episode. I nearly misquoted it. Since then, I set a rule for myself: whenever an important number appears, check which article, which date, which person it belongs to. Title and content must match — that is the minimum. In this Samarkand case, the minimum was not met.

The DVD's target buyer is described clearly: "players who like to think for themselves, not memorizers." This is identity-based marketing, not quality-based marketing. It targets a specific segment — club players tired of rote learning, people who want to believe there is a "clean" road out of machine territory. That segment is real. I know many of them. They are middle-aged players, young coaches, amateur competitors looking for a foothold in a world with less and less ground for intuition.

For them, the DVD has real value. It reminds them that chess is not only a memory table. It reminds them that some positions can still be read by feel. But that value belongs to the learning experience, not to theory. It does not make 9...a5 an antidote, nor does it restore the King's Indian to the top of a grandmaster's arsenal.

Objectively, the difference between a "novelty" and an "antidote" matters. A novelty is a move never seen in databases; its value lies in surprise. An antidote is a known move repackaged; its value lies in practicality. This DVD does not sell surprise. It sells practicality. And in the practical field, author credibility and game data are the only two verifiable assets. Neither is present.

A serious buyer should check three things before spending: first, who the author is and their results in the King's Indian; second, whether the preview gives concrete variations with engine evaluations; third, whether the product creates value distinct from free databases. If all three answers are vague, the buyer is paying for a cover, not a course.

In the modern theoretical landscape, the King's Indian Mar del Plata survives mainly as a "surprise weapon." It is no longer the main system of elite tournaments. But for its faithful, it remains a private martial art — difficult, beautiful, and always demanding deep understanding. A DVD selling 9...a5 will not revive the King's Indian. It only supplies one small branch of a large system, to a group of learners already committed to entering that system.

In practical terms, the question worth asking is not "is 9...a5 strong." It is: is 9...a5 enough for an average learner to improve results. The answer largely lies outside the move itself. It depends on whether the learner has the patience to read closed positions, can tolerate the ambiguity of positions without clear conclusions, and is clear-headed enough to distinguish "less memorization" from "less preparation." A move does not teach a player how to play. Only time and games do that.

The contrarian angle is here: the very fact that the product leans on the "computers don't understand" argument shows it no longer fits the neural-network era. A product claiming to beat AI is admitting it was written by pre-AI thinking. In a market where free tools like Lichess, ChessBase Cloud, and open databases cover the globe, a paid product survives by only two routes: well-edited narrative, or author credibility. This DVD takes a third route — stimulating the learner's identity — the shortest road, but also the most vulnerable.

When a course promises "less memorization," the learner still has to memorize. When a course promises "safety," the game will still have dangerous moments. When a course promises "computers don't understand," the computer understood long ago. Overpromising does not immediately devalue a product. But it creates an expectation gap, and the expectation gap is the worst thing in chess education. Learners are disappointed not because the product is bad, but because it does not match the advertisement.

There is a deeper paradox. The opening market operates on the assumption that the buyer wants a solution. But chess has no solution. No move guarantees a draw, no course guarantees a win. The only thing that can be bought is time and organization — a map to move faster through land you must still walk yourself. Any product that crosses that line, any product that promises more than a map, is overstepping its own limits.

I return to the file on that rainy Da Nang night. Samarkand is not inside it. Only 9...a5, a move resting quietly between two bigger ones — the move that opens the board, the move that closes it. Perhaps that is what is worth keeping from this small story: not the product's promise, but the lesson about how we choose to learn. A move cannot save an opening. But a player who can read his own game — that player can save himself. People talk about speed, but I find time.