9...a5 in the King's Indian: A Strategic Shield, or a Marketing Story

Last week a photograph spread from Astana, the capital of Kazakhstan. A man standing beside President Kassym-Jomart Tokayev, described in the headline as the "FIDE President". Attached to that same report was an entirely different item — a promotional message for an instructional DVD on the Mar del Plata variation of the King's Indian Defense. A courtesy meeting and a commercial claim, sitting side by side under one headline. With the board laid out before me, my first question was: which one is the actual news here — the man's title, or the move 9...a5? The name Mar del Plata comes from the 2026 Interzonal in Gothenburg, where Soviet players effectively crushed their opponents in this system. This branch of the King's Indian Defense remains Black's sharpest weapon. White keeps the centre closed, Black prepares an attack on the king, and the two sides advance on opposite wings in their own way. White storms with pawns on the queenside, Black gathers pieces on the kingside — which race finishes first is the central question of this defence. When I was pasting together old newspaper clippings to log games in this branch back in the 1980s, one thing was already clear to me: this defence is not a matter of memorisation, it is a matter of decision-making. White's most uncomfortable weapon is the so-called Bayonet Attack — 9.b4. The move looks harmless, but its plan is clear: push the queenside pawn to break Black's structure, then keep the pressure in the centre. Black's natural set-up stumbles against this, because the plan of ...c5 is delayed and White creates the threat of the b4-b5 push. This is exactly why White leans toward 9.b4 in modern practice — it pulls Black off his comfortable path and forces him to decide while unprepared. Here the two-path question arises. The main path is 9...Nh5 — lifting the knight to h5 so Black can prepare the ...f5 break. Theoretically it is clean, but the game then opens up and becomes forcing; both sides follow near-mandatory sequences, and the difference is made by who has memorised deeper. This is precisely why 9...Nh5 is so popular at international level — it can be spoken in the computer's language, so preparation itself is the real weapon. At the top level, much of what happens on the board has already happened on a laptop. The DVD proposes another path — 9...a5. Black uses a queenside pawn to squeeze the space for White's b4, keeps his structure intact, and steers the game toward a slow, strategic struggle. The promotional message claims this path produces "sound positions" and keeps "very few concrete lines" — that is, it frees Black from an enormous memorisation burden. The argument has a logical basis: fewer forcing lines means less recall pressure and more freedom in decision-making. For a player short on time, that benefit is not small. But I laid the board out, and the pattern had been waiting. In the King's Indian, even so-called "strategic" positions often turn sharp. When Black later plays ...f7-f5 and both sides start attacking on opposite wings, a single wrong move can become mate. 9...a5 is undeniably a known practical solution, but the DVD labels it an "antidote" — that is the language of marketing, not a new theoretical discovery. "Fewer concrete lines" does not mean "less danger"; it means the decisions have simply moved elsewhere. My experience says such lines are really verified on online blitz and on the home preparation table. In 2026, when stadiums emptied, chess moved online, and I scanned players' accounts late at night from Dublin. Around then a ten-year-old showed me where my model had gone lazy — a low rating, but endgame technique far above it. The 9...a5 question is the same: however strategic it sounds on paper, how safe it truly is will only surface in matches played by rated players. This is where the ledger's question arrives. The promotional message claims computers "often do not know how to handle these positions". The claim may be partly true — modern engines can evaluate positions, but they cannot always capture human practical difficulty. But where there is no win-draw rate, no engine evaluation, no ACPL, not even a single full game example — there the claim is not evidence, it is belief. The lament was loud; the ledger was quiet; the ledger won. The second verification point is simpler. The headline claims Timur Turlov is the "FIDE President". The official record says the FIDE President is Arkady Dvorkovich. Turlov is probably a person connected with chess funding and administration, but if the title is used literally, it is an error mark in journalism. And the meeting has no relation to competitive chess or to 9...a5 — two separate stories are stitched together, and that stitching is the real gap in the report. So who is this DVD for? Probably club-level and advanced amateur King's Indian players, who play the defence but do not want to memorise every line. Top-level players do not rely on "very few concrete lines" — they make memorisation itself their weapon. The DVD was likely made precisely because White's Bayonet Attack has now become a real problem for Black. The DVD author's identity, rating, or repertoire pedigree is nowhere stated — and in the ledger of evidence, that too is a blank cell. Before leaving the board, my final question remains for the coming matches. In the next Mar del Plata games, how many titled players actually choose 9...a5, and how often Black equalises comfortably in those games — that will be the real verification. Until then the claim stays a DVD's promise, not a measurable fact. The ledger lies open; let the first database entry arrive, and then the decision.