The Bayonet 'Antidote': The 9...a5 Claim, the Headline Gap, and the Duty to Verify

Late last night, in my bedroom in Mymensingh, I opened a PGN file on a secondhand laptop and stopped dead at a single move on the screen. King's Indian Defence, Mar del Plata variation, White's Bayonet Attack — 9.b4. Black to move. The familiar club-room refrain says the natural answer is 9...Nh5; then comes ...f5, ...Nf4, and fire on the kingside. But a commercial video disc is telling me the opposite story: here Black's 'antidote' is supposedly 9...a5, and these positions are supposedly built on 'so few concrete lines' that even computers often cannot work out what to do. The move froze on the screen, and it struck me that the question was never really about the move. From a Mymensingh bedroom, I learned long ago that the stadium is only a screen. Batumi arrived in 2026 through remote control, and the game became a signal I could pause at will. That ability to pause taught me something: a position watched from a room is not the same as a position watched standing at the battlefield. So I rewound the file, looked at the move again, and began to ask why, precisely here, a product for sale calls itself an 'antidote.' One more thing caught my eye at once. The headline and the body of the source do not match. The headline speaks of a high-level official meeting in Kazakhstan, while the substance is an advertisement for a commercial chess DVD. This is nothing new — across chess coverage in our region, the gap between headline and content has almost become a rule. But my job as a reader is clear: keep what can be verified separate, and keep marketing language in the marketing column. Today's thread therefore runs two strands together — the technical business of a board, and the cleanliness of a news item. What the Bayonet Attack actually wants The Mar del Plata variation is the sharpest face of the King's Indian Defence. It takes its name from that 2026 tournament in Argentina, and when White plays 9.b4, the move is called the Bayonet Attack — because that b4 thrust drives into the queenside like a bayonet blade. White's plan is not simple, but it is clear: clamp space with c4-c5, build pressure on the b-file, then slowly suffocate the queenside. White wants the game to be slow, wants Black's pieces to be unable to breathe. One thing must be remembered from this variation's birth to today: the King's Indian is never a safe system. Here the two sides often attack on opposite wings, and who arrives first decides the result. Russia 2026 was not merely a tournament to me; it was a 32-piece board breathing. I read that football tournament as a pitch, and it is with exactly that eye that I read this King's Indian structure today — here too, a single small error costs the whole game. Black's traditional answer is 9...Nh5. The knight leaps from g6 toward f4, then comes ...f5, and the kingside is wrecked. From here the game frequently slips into forced lines — meaning both sides largely survive on memory. At the top tables this has long been the custom. If White sits down without having memorised the theory, Black's knight and pawn storm cut him down. At this point the DVD says Black can sidestep that forced path and choose 9...a5. The idea is that White's b4 pawn should not sit so comfortably. ...a5 directly questions b4. White must decide — push b4 to b5, or accept the exchange and turn the game elsewhere. Black wants to calm the queenside tug-of-war, then build his own undermining with ...Nd7 and ...b6. Where the two moves really differ 9...Nh5 and 9...a5 — both are in the theory books. The question is where the difference lies. With 9...Nh5 Black advances his own kingside attack, and the game usually settles into sharp, calculating lines. With 9...a5 Black instead says: today I will first tidy up your house, and think about attack later. From here 'very few concrete lines' are born — meaning the burden of memorisation falls, but the burden of strategic understanding rises. My experience says this is the real attraction for club-level players. Those who play two or three times a week at the club, who sit at the board in the gaps of a job, cannot possibly memorise seventeen moves deep. A repertoire with fewer computer-memorised lines is gold to them. This is, I suspect, why the DVD came to market — because 9.b4 is growing in popularity on White's side, and Black players feel helpless. But a warning is needed right here. 'Very few concrete lines' does not mean the position is calm. In this King's Indian structure, when Black later plays ...f5, the game flares up again. The two sides then attack on opposite wings, and one wrong move drops the king. So fewer memorised lines do not mean less calculation — I have seen this again and again, from club level to the national championship. Black's actual plan Standing at the board, 9...a5's plan can be broken down like this. First Black wants to settle the queenside tug-of-war — by playing ...axb4, or by forcing White into b5. Then comes ...Nd7, sometimes ...Ne8, and then gradually ...b6 or ...c6 to control White's c5 square. Black's dream is to hold White's queenside attack at bay while grabbing space on the kingside with ...f5 and ...g5. The curious thing is that this plan looks slow but is not merely quiet. If Black delays ...f5, White by then clamps down with c5 and shuts the game. If Black rushes ...f5, White drops a knight into e5 and storms the centre. In other words, in this line Black must hold a delicate balance — exactly the point where a human stands, and exactly the point where an engine's evaluation often falls silent with 'equal.' This, I think, is where the DVD's sales pitch becomes understandable. To a player who wants to experiment, who wants to leave the engine's lines and play from his own understanding, such a product is a temptation. But temptation and proof are not the same thing — and that distinction belongs at the centre of today's discussion. The gap between computer and human Now to the DVD's most contested claim — 'computers often cannot work it out.' I do not want to dismiss this outright, nor to swallow it whole. Let me first say honestly what is true. In closed, strategic positions, engines until recently did not grasp human difficulty. When an engine sees both sides pushing pawns to close space, it often concludes 'equal,' while in reality the Black player faces a nightmare — the fear of blundering on every move. Evaluation and practical difficulty are not the same thing. In this sense the DVD is partly right. But the problem is that modern engines — especially neural-network-based ones — understand such positions far better than before. Second, a bigger problem: the DVD offers not a single number in support of its claim. No engine evaluation, no average centipawn loss, no win-draw-loss rates, no high-level game examples. Only words, with 'antidote' written on their face. In marketing language this may work, but in analysis it is not proof. The price of an unsupported claim This is not new in the chess market. Preparation products sell on a single hope — 'if your opponent does not know this line, you win.' But the truth is that a line's value can be measured only in data: how often a move has been played at a high level, White's win rate, Black's, and what an engine says at depth. If these are missing, the rest is guesswork. I have personally built a habit over many years — beside any large claim, I keep my own data. In 2026, when over-the-board chess stopped, I covered the Online Olympiad from a router at home, and it was then I realised the Online Olympiad taught me that the empty stadium is chess's eternal home. From that time I have kept every verifiable Bangladeshi result in a spreadsheet. That habit taught me that a claim left without numbers beside it simply hangs in the air. The gap between headline and board Back to the second strand. The person named in the headline is called 'FIDE President' — Timur Turlov. To me this is something to verify. Widely available official records say the FIDE President is Arkady Dvorkovich. So either this is a wrong label, or some specific role is being described vaguely. Either way, the reader should not accept this information without verification. Likewise, the rest of the headline — a meeting in Kazakhstan with President Kassym-Jomart Tokayev. Kazakhstan's ties with FIDE are not new; Almaty once hosted the World Rapid and Blitz Championships, and chess patronage there is not small. But these two news items — an official meeting, and a DVD sale — have been blended under one headline. This is my real concern. In chess journalism such blending erodes the reader's trust. What someone said where, what someone played on the board, and what someone is selling — these are three separate things. A lesson from our own courtyard Now to our own courtyard. It is time to think about why this kind of 'human-playable' repertoire product matters to our club players. Many who play in the Dhaka Premier Division have day jobs, coaching work, families. They cannot memorise lines all day like an engine farm. So the promise of few concrete lines tempts them. But my long-held lesson is that a cheap promise of memorisation is sometimes expensive — because fewer memorised lines do not mean less calculation. I want deliberately to bring a different lens here. When we talk about chess, we usually pull only male players, grandmaster counts, and the arithmetic of big tournaments. Yet players like Rani Hamid have held the board at Olympiads for decades, managing the household, travelling abroad on their own money. That kind of dedication, that patience, is also part of our chess culture, and it is almost always left out of the product-selling discussion. When a DVD sells an 'antidote,' standing right beside it is the daily struggle of our club culture, whose arithmetic no video disc contains. What to watch next My proposal is simple. First, set the move up on your own board. After 9.b4, play 9...a5 and see where the game goes in both branches — ...axb4 or White's b5. There is much here worth seeing with your own eyes. Second, do not believe without numbers. If a claim says 'computers cannot work it out,' ask for the engine evaluation, the win-loss statistics, and high-level game examples. If they are missing, that is sales talk, not proof. Third, remember the headline gap — keep the official meeting and the board technique separate. I closed the file myself, then opened my familiar spreadsheet — where I have stored every verifiable Bangladeshi result for years. That spreadsheet taught me that the distance between a large claim and a small proof must be measured with patience, not guesswork. Since the game lives not in a stadium but on a screen, the question remains: next time someone sells you a move as an 'antidote,' will you verify it yourself at the board, or just buy the label?