The 9...a5 Move and the Crack of Trust in the Chess Opening-Publishing Industry

One June evening in Chengdu, I sat in front of a screen with seventeen video tapes stacked like a wall of paper. That night I was preparing for a broadcast. On the desk, beside a cup of cold tea, lay the promotional sheet for a chess DVD advertising the move 9...a5 as an antidote to the Bayonet Attack — the fashionable aggressive line in the King's Indian Defense. The sheet said this was a path for those who "prefer to think for themselves rather than memorize." At the same time, another piece of news caught my eye. Its headline mentioned "Samarkand R2 (open)," a team event in Uzbekistan — a nation with a strong chess tradition. But when I read on, the entire body of text was about that very opening DVD. No tournament. No teams. No results. Only a product. Two stories, two worlds, spliced together by an editorial error. And in my profession, an error like that is not a small matter. I looked at that mismatch longer than at the technical content. Because the chessboard never lies; only we deceive ourselves with applause. The applause of the chess theory-publishing industry is clapping off-beat, and it falls out of rhythm right from the headline. In forty-one years of following this industry — from chess player, to tournament organizer, to thirty-two years in a broadcast studio commentating on chess — I have learned one thing: every opening product sells a belief. It does not sell the move. It sells the feeling that the buyer has found a shortcut. And this time, that shortcut has a name: 9...a5. To understand this story, one must understand the King's Indian Defense. The King's Indian, or KID, is one of the oldest hypermodern systems still alive at the top level. The game begins with 1.d4 Nf6 2.c4 g6. Black concedes the center from the start — letting White take space — then posts a bishop on g7 and counterattacks from behind. That is the hypermodern philosophy: controlling the center not with pawns but with pieces from afar. In the Mar del Plata Variation — the heart of the Classical system, coded ECO E97 to E99 — Black brings the knight to c6, pushes the e5 pawn, and both sides launch a race to attack opposite wings. White storms pawns on the queenside. Black storms pawns on the kingside. Nobody waits. This is one of the classic speed races of world chess, where one slow move can mean a lost game. Chess fans may remember the classics of the Fischer and Kasparov eras — when the KID was the weapon of those willing to take risks. Kasparov played it many times and turned it into one of his most feared weapons. But the 21st century has shifted the balance. Computers analyze every move. Variations that force a specific line become a memory burden. And that is why the Bayonet Attack emerged as a challenge. The Bayonet Attack — the move 9.b4 — is White's way of grabbing queenside space before Black can launch the counterattack. The name "Bayonet" evokes a piercing assault. It is not new. It has been played since the 1980s. But in the engine era, it became "fashionable" because it poses a set of concrete questions Black must answer precisely. The orthodox reply is 9...Nh5 — Black pushes the knight to the rim, opens the position, and forces White into concrete calculation. This move makes computers important again, because only a machine can remember all the branches. It turns the game into a contest of memory and accuracy. Meanwhile 9...a5 — the move that DVD advertises — is a sideline. It already exists in the database. It is not an invention. It is a strategic move, pushing the a-pawn to challenge White's b4 pawn, steering the game into a closed position, with few concrete lines and more long-term calculation. The seller does not promise a new move. They promise a new character: from "forced" to "possible." That is an attractive promise. And it is also a promise that needs verification. The first thing I noticed reading the promotional sheet: not a single number. No Average Centipawn Loss — ACPL. No win rate. No draw rate. No sample games. No author name. Just a claim that the two sides are "equal" and that computers "often do not know how to handle" these positions. For a man who has commentated on chess for thirty-two years, that is a red flag. We live in an era where every technical claim can be checked against a free database. There is no reason a commercial product cannot supply at least a few numbers. The absence of data is not because there is no data. It is a choice. This product belongs to a familiar stream of the chess market: ChessBase-style opening DVDs, where an expert presents a system as an "antidote." The business model is simple. Find a popular variation. Find an underplayed move. Call it a "secret weapon" for those who like to think for themselves. Sell it to club players looking for an edge. The truth is that 9...a5 is no secret weapon. It is a known sideline. That is the most important point the promotional sheet does not state. If someone studies a free database, they will find it. And they will see that it does not guarantee equality. It only guarantees a different position. There is a branch of the chess theory industry that calls this "consumer theory" — where knowledge is repackaged and sold to amateur players. It is not bad. It is necessary. But it must be honest about what it delivers. Here I want to speak of a segment of players who genuinely need products like this. Not because of the move. Because of the presentation. A well-structured DVD teaches them how to think about a position, not just how to memorize moves. That is the real value, lying beneath the marketing shell. For a club player who plays two games a week, understanding pawn structure in the KID can matter more than memorizing the first fifteen moves. That is the skill of navigation — something no engine can teach in your place. But that real value is obscured by unproven claims. And that is a problem for the entire industry, not just one product. When a major manufacturer sells belief instead of data, they do not just deceive one buyer. They erode the standards of an entire market. Buyers gradually lose the ability to distinguish between a valuable product and a well-packaged one. What made me pause longer than the technical content was the issue of the source. The article's headline spoke of a team event in Samarkand — a real event, in a country with a strong chess tradition. The body below spoke of a DVD. The two are unrelated. This is not a small error. In the commentary profession, I learned that a source with a wrong headline is a source that can be wrong about everything. In 2026, I thought I had stepped onto the stage. It turned out I had only entered the corridor. And that lesson applies here: a report with a mismatched headline may not necessarily have wrong content, but it loses the right to be believed. The second problem is the computer premise. The line "computers often do not know how to handle these complex strategic positions" is the language of the pre-AlphaZero era. Today, neural-network engines handle long-term KID positions far better than that sentence implies. This is outdated marketing language. It may still work on buyers who do not follow engines. But for an informed reader, it lowers credibility. The third problem is exaggeration. The line "if Black knows what to do, things quickly become dangerous for White" is a directional claim, unverifiable from the text. It depends entirely on White's level of preparation. This is a classic sign of expectation inflation in product advertising. The chessboard never lies; only we deceive ourselves with applause. And in this case, people are applauding a headline that does not match the content. I ask myself: if a product cannot supply an author's name, what is it selling? If it cannot supply sample games, what is it hiding? These questions are not meant to deny the product's value. They are meant to remind us that consumers of chess knowledge also deserve protection like any other consumer. Beyond the marketing shell, there is a real technical lesson in this story. The King's Indian Mar del Plata survives at the top level as a "surprise weapon," not a mainstay. It concedes space and invites sharp, well-theorized games. A move like 9...a5 does not change that. It merely offers another option to Black players who want to avoid forced theory. For club players, the product's real value lies in the skill of navigation. It teaches them that there are positions where you do not need to remember fifteen moves. You need to understand pawn structure, piece structure, and strategic goals. That is a skill. And it can be learned. But against a well-prepared player, 9...a5 can be neutralized. This does not mean the product is useless. It means the product is not a miracle. After July 2026, I understood that humility is also a tactic — both on the board and in evaluating a product. An opening DVD does not change chess. A move does not defeat a system. What changes chess is how we learn. And how we learn is being shaped by products that promise more than they deliver. In this theory transfer window — when everyone is selling a "weapon" — readers need a filter. Look for the numbers. Look for the author's name. Look for sample games. Check whether the headline matches the content. If a product gives you none of those three, it is selling you belief, not knowledge. From keyboard to chessboard, the speed of words is never as fast as the speed of pieces. But the speed of truth? It is slower than both. And that is why we need patience, need video tapes, need seventeen video tapes stacked up if necessary. The move 9...a5 will stay in the database. It will be played in club games. It will be re-analyzed. And perhaps, in another theory cycle, White will find an "antidote to the antidote." That is the nature of chess. There is no final move. Only players who keep searching. The remaining question is not whether 9...a5 is good. The question is: when a product sells you a shortcut, do you dare to ask how long that shortcut is? The chessboard never lies. But the salesman does. And the wise buyer is the one who knows how to tell the two apart.