Svitlana's Smart Moves: Packaging 9...a5 Against the Bayonet, and the Empty Data Behind It

A DVD contents page was open on the screen. The chapter list was short — King's Indian Defence, Mar del Plata, 7...Nc6, and beneath it a single branch: 9...a5 against 9.b4. One line on that page glowed: "Objectively equal, but dangerous for White." I opened fourteen tabs — engines, databases, Olympiad game files, older episodes of the series. Not one of the fourteen had a number standing behind that sentence. No engine evaluation, no game count, no results percentage, not even a named model game. The first clue was not the move; it was the fourteen tabs I refused to close.

This is not a new genre in the chess opening market. In the King's Indian Defence (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6), Black concedes the centre, strikes with ...e5, then rolls the kingside pawn storm with ...f5. The Mar del Plata is the sharpest branch of that logic: ...Nc6 and ...Ne7 arrive, ...f5 follows, and the board splits into two fronts — White eats on the queenside, Black on the kingside. For decades White's main weapons were 9.Ne1 and 9.Nd2; then the modern era produced 9.b4, the Bayonet. The idea is blunt: push the b-pawn so Black's queenside clean-up (...a5, ...axb4) is delayed, and stake the ground before the storm begins. In ECO terms this sits roughly in the E97–E99 band.

Black's dependable answer has been 9...Nh5, which rides the threat of ...f5 and ...Nf4 — effective, but demanding calculation at a high level. Meanwhile the Mar del Plata's elite footprint has shrunk, because engine-driven White set-ups and anti-KID systems have compressed Black's practical winning chances. That is the market into which a product arrives promising "strategy, not tactics." The series title borrows the Olympiad as branding, and here I found a borrowed business model hiding in plain sight: public, zero-cost Olympiad games with a premium label laid over them.

The real question is what 9...a5 actually delivers. The move puts a direct question to b4, keeps ...a4 available, and gives Black room to breathe on the queenside instead of rushing ...f5. It is no novelty — it has appeared in practice as an occasional alternative. The product's value lies in consolidation and explanation, and it should be read on those terms.

This is where the weakest technical link appears: "computers cannot handle these positions." That sentence belongs to the 2026–2026 era. Since NNUE evaluation arrived in 2026, engines handle closed, manoeuvring KID structures far better than they once did. The product also cuts against itself inside one paragraph — after 9...Nh5, it concedes, "computer analysis becomes important again." Both statements can be true, but then one must admit that engine mastery is the norm and 9...a5 is an escape route from it, not territory beyond it.

The scope is as narrow as the claim is large. The DVD answers 9.b4 only. White still holds 9.Ne1, 9.Nd2 and the move-eight alternatives (8.Be3, 8.Re1). An anti-Bayonet module and a Mar del Plata repertoire are different purchases, and for the buyer that difference is expensive. Sourcing model games from Olympiads is sound in principle — the field is deep, the scores are public — but team matches tolerate draws, and examples drawn from result-oriented play need cross-checking against a Candidates or a pure round-robin.

The biggest miss sits in the title. It says "King's Indian Attack" while the subject is the King's Indian Defence. Those are separate openings; the KIA begins 1.Nf3, 2.g3, 3.Bg2. In a search-driven market the error cuts twice: wrong buyers get pulled in, right buyers get confused and leave.

Here is the part absent from the marketing. "Few concrete lines" does not mean "easier." The closed, strategic positions being sold are exactly where club players leak advantage fastest, because no forcing sequence carries them — every move demands a judgment call. Advertising that promises ease and delivers difficulty is the most reliable generator of niche backlash. It is the same disease as praising a goalkeeper's long distribution while forgetting his save percentage. One more layer sits on top: a published "antidote" tells White precisely what to prepare against. The low-memorisation edge being sold begins eroding on release day. When the data goes quiet, I listen for the explainer's voice — and here the explanation is fine while the evidence is missing.

At the Chennai Olympiad in 2026 I spent weeks on board geometry, and I filed Qatar 2026 from a Hyderabad desk at one in the morning. That habit has stuck: I measure an opening product by its scope, never by its promise.

Three things to watch: whether the current engine evaluation of 9...a5 stays stable across depth; whether the line turns up in 2650-plus classical games; and whether White's preference for 9.b4 holds or drifts back to 9.Ne1 and 9.Nd2. If all three stay quiet, the product is as useful as any consolidation can be — and not an inch more. The question is not whether 9...a5 should be played. The question is: on what assurance do you put a line into your repertoire when not one number stands behind it?