The 9...a5 Move and the Chess Player's Escape Route in the Engine Era

I still remember that winter evening in Saint Petersburg, when snow covered the window frame and the temperature fell below minus fifteen degrees. I sat alone, replaying a King's Indian Defense game I had played years before, while in the drawer lay a DVD a colleague had sent from Moscow. That night, amid the wind slipping through the window, I understood something that nearly half a century of watching chess had taught me: behind every recorded move, there is always a person trying to find a way out for himself. That move was called 9...a5. Forty-nine years observing the chess world, from school tournaments in Vietnam to playing halls in Europe, taught me that the board goes beyond the contest for points. It is where a person confronts the limits of his own memory. And at the frontier of that memory, a move like 9...a5 appears like a whisper to players who do not want to become machines. To understand 9...a5, one must understand where it was born. The King's Indian Defense is an opening in which Black deliberately concedes central space, builds a wall of pieces with ...g6, ...Bg7, ...d6 and ...e5, then counterattacks on both wings. In the Mar del Plata system with 7...Nc6, both sides launch an attack race: White masses on the queenside, Black opens the way for a kingside assault. This is one of the fiercest branches of classical chess. White's 9.b4, known in expert circles as the Bayonet Attack, is a thrust that seizes queenside space. It both pushes Black back and disrupts Black's plans before they are ready. For decades, Black's mainstream reply was 9...Nh5 - prying open the position and forcing both sides into concrete sequences, where a single small mistake can cost the whole game. The move order leading to this position is usually 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.b4. Then, instead of the familiar 9...Nh5, the DVD proposes 9...a5. Black advances the queenside pawn, attacks White's newly advanced b4-pawn, and prepares ...c5 or ...Be6. It is a strategic move, not a tactical one. The Bayonet Attack is nothing new. Since the 1990s, 9.b4 has been an important White weapon in top events, forcing Black to keep searching for answers. In many world-championship-level games, both sides reached the end of theory within a few dozen moves. That very pressure created demand for less-examined paths - and 9...a5 is one of them. The appeal of 9...a5 lies in the fact that it does not try to prove an advantage. It only tries to create a position in which both sides must think in plans, not in memory. The presenter on the disc says 9...a5 leads to positions with very few concrete lines, where strategy outweighs tactics, and where computers often do not know how to handle things. That is a psychologically appealing argument. Objectively, 9...a5 is described as balanced in position, yet practically dangerous for White if Black knows the plans. This means Black does not seek an advantage from the opening, but from understanding. For a club player who rarely meets the Bayonet Attack at a high level, this is a reasonable choice. It reduces the memorization burden and increases understanding of the position's structure. Within the King's Indian community, two groups of players exist. The first are the engine warriors, ready to memorize hundreds of mainstream moves to reach the best position. The second are the strategists, who want to grasp the plans and improvise at the board. 9...a5 is the choice of the second group. The very existence of a product like this DVD shows that this group is large enough to form a market. For the club player, the value of 9...a5 is that it turns a sharp opening into a game of understanding. They do not need to remember hundreds of lines; they need to understand why Black advances the queenside pawn, why controlling the c5-square matters, and when to trade pieces. That is a more durable kind of knowledge, because it is not wiped out by a single engine update. After 9...a5, Black's plan is fairly clear: push ...c5 to open a file, develop the bishop to ...Be6 or ...Bg4, and depending on the situation bring the knight to ...Nf6-h5 to press the kingside. White must decide how to handle the b4- and a5-pawns, and weigh whether to keep the center closed or open it. It is this variety of plans - not a single unique line - that makes 9...a5 hard to prepare against. I spent many evenings replaying my old games to test this. In a 2026 club game in Saint Petersburg, I once watched a young Russian player, rated around 2200, choose 9...a5 against a higher-rated opponent. He did not win with a combination, but by keeping a healthy pawn structure while his opponent lost his bearings. That is proof of the quiet power of strategy. But here I must stop and look straight at something uncomfortable. The DVD provides no figures whatsoever. No win rate, no draw rate, no average centipawn loss (ACPL), no engine match rate, no sample of games. Every claim about the superiority of 9...a5 over 9...Nh5 rests on prose, not on data. And this is the blind spot of the story. The central argument - that computers often do not know how to handle complex strategic positions - is weakening year by year. The strongest engines today, such as Stockfish or Leela, evaluate the strategic positions of the King's Indian Defense reliably. What was once called the computer's dark zone is shrinking. This turns the product's promise into a depreciating asset. When the stadium no longer has a ball, memory begins to score. That line of mine, written during the pandemic days when tournaments were suspended, also holds for the chessboard. When computers leave no gap, people seek their value elsewhere - in understanding, in plans, in the ability to read a position. But if even that gap is filled by engines, the promise of escaping theory becomes merely a beautiful dream. I do not deny the practical value of 9...a5. The move has appeared in top-level play as a space-gaining, tempo-gaining thrust, preparing ...c5 and ...Be6. It is a repositioning of a line that has long existed. Its value depends on the audience: club players who want to understand plans rather than memorize will find it useful; professionals who face the Bayonet Attack regularly will need more than that. There is a paradox worth pondering here. The product is marketed as an escape from the computer era, yet it cannot exist without computer verification. Buyers have no way to verify whether 9...a5 is truly better than 9...Nh5, because no database is cited. They must trust the author's reputation - an author who, notably, is not named anywhere in the material I hold. The transfer market is where people sell the future to buy hope. I once wrote that about the football transfer market, but it holds too for the chess knowledge market. A player buys a DVD not to buy moves, but to buy the hope of understanding the board better. And in an age when opening knowledge flows through subscription platforms like Chessable, where content can be updated after each engine patch, a static disc carries a structural disadvantage: it cannot be corrected after publication. This is what I have observed over many years. The DVD format represents a distribution model that has matured and is now declining. Opening knowledge today needs constant updating; a move can be refuted within months thanks to new games and engine updates. A disc cannot do that. It is a photograph, not a stream. But I do not want to end in skepticism. For behind all the missing figures and outdated formats, something right remains. The wish to understand the board rather than memorize it is an eternal wish. It belongs to no format and to no generation. It is the voice of the chess player who wants to keep his human part amid a world increasingly shaped by engines. Esports taught me that youth is not in muscle, but in the reflex of the heart. About chess, I would add: maturity is not in the number of moves memorized, but in the ability to read the opponent's intention. 9...a5, though lacking data proof, reminds us that some games are decided not by who remembers more, but by who understands deeper. Luzhniki night - the old bird understands that landing is also a way of flying. In chess, sometimes a humble move like 9...a5 - not charging into the computer's war - is the way a player keeps his identity. But for that promise to stand, it needs more than a DVD and a pretty argument. It needs data. It needs real games. And it needs an author willing to put his name on it. The board is still there, with gaps not yet filled by engines. What I want to send to chess players is not whether to choose 9...a5 or 9...Nh5, but: do you want to be someone who understands the board, or someone who memorizes it? If the answer is the one who understands, start by demanding evidence - even from the most promising products.