ChessBase Magazine #225: 27 Miniatures, Three Opening Videos and One Missing Denominator

27.

That was the first number I saw. On the contents page of ChessBase Magazine #225, under the Chess Festival Prague 2026 coverage, one line with the header 'Special': 27 highly entertaining miniatures. I counted it twice before opening the file, as if counting again might change it.

Then came the question that always comes and that a contents page never answers: 27 out of what? How many games were played at Prague 2026 in total? Without a denominator, 27 is not a statistic — it is an adjective with a number hung on it. 'Highly entertaining' is pure packaging; entertainment has no Elo.

And yet that 27 is what stopped me. Because the miniature rate — the share of games finishing inside 25 to 30 moves — is the cleanest proxy we have for opening preparation failure. If an issue carries 27 miniatures, something happened there: either the preparation worked, or the preparation broke. Broken preparation is always the more interesting of the two.

First, what ChessBase Magazine #225 actually is

It is not a tournament report. It is a training product — built for club players and professionals alike, in which top players annotate their own games and explain the ideas behind the moves. This issue carries the Prague 2026 coverage, and the annotation list reads: Aravindh Chithambaram, Anish Giri, Ediz Gurel, David Navara and others. Alongside it, a special section of 27 miniatures. The opening videos belong to three presenters — Werle, King and Ris. There are ten opening articles with new repertoire ideas. Delivery comes two ways: a direct download that includes the booklet as a PDF, or the booklet by post with a download key. The issue also ships as a ChessBase Book for iPad, tablet and Mac.

I first understood in 2026 that the value of these products sits in the annotations, not the results. I was the third analyst hired at a Coral Gables sports-data startup and I got the chess vertical because its soccer writer had quit. I scraped 4,100 PGNs — from the 2026 National Premier in Delhi, from three Chennai opens, from every age-group national I could find. The model was built on endgames: how often does the side with a material edge actually convert. That sheet surfaced a 13-year-old Nihal Sarin holding 71 percent of better endings, and a 12-year-old R. Praggnanandhaa barely losing accuracy on increment. Both numbers are stale now. The method survived.

The method is this: I build the thing first, then go looking for the question. Here I read the contents page first and formed the opinion afterwards.

Three separate causes of a miniature, and the mistake of binning them together

What counts as a miniature is a technical argument — most databases draw the line at 25 moves or fewer, some go to 30. The argument matters because moving the line moves the rate, and moving the rate moves the conclusion. If those 27 miniatures came from one definition and that definition is not printed in the issue, we are reading a number that cannot be rebuilt. That sounds small. It is not. A number that cannot be reproduced is not a news item; it is an advertisement.

There are three distinct reasons miniatures happen. The first is a refuted line. A sharp system carries a branch-by-branch expansion of preparation, and the opponent steps off the branch. This happens most in fast lines like the Najdorf, the Grünfeld, the King's Indian, because there one move's difference becomes mate fifteen moves later. The second is a preparation leak — the player was prepared, but in the wrong branch. The third is a cascade of blunders, usually tied to time pressure, which is why it shows up less in classical control.

Only the first of those three teaches anything. The other two are entertainment, and selling entertainment is part of a training product's job — I am not calling it a fault, I am labelling it.

In the games I do read from those 27, I look at the loser's moves 8 through 12. The winner's finish teaches nobody anything; the combination was already there, only execution remained. The question is how that position arrived. I keep a three-column sheet: move number, name of the opening line, and the first move at which the engine crossed minus 1.00. That third column tells you the game ended on move 22 but the loss was settled on move 11. The true length of a miniature is not 22. It is 11.

A confession here. In November 2026 I paid my own fare to London and sat in the Holborn press room for all twelve classical games of Carlsen–Caruana — the first world title match in history decided entirely in tiebreaks. I logged 738 moves and coded every position where the engine crossed plus 1.50. My sheet found six moments where neither player chose a top-three move, and Carlsen then swept the rapid 3–0. My editor wanted a 'boring match' column. I filed 2,400 words on decision quality. Twelve draws taught me more about winning than any victory did. That experience produced a rule I still run: before calling a short game brilliant, ask why it was short.

The annotation market, and who gets commissioned

Who gets the annotation commission is itself a market signal. Every transfer window is a confession written in fees; in chess media the fee is replaced by the annotation commission. Anish Giri sits at the top of that list and not only because of his rating. He is a top-level player who can write in an editor's language — few words, no engine tree dumped on the page. David Navara is the most valuable name in this issue, and the reason is economic rather than technical: he is the Czech anchor, Prague is his home, and he annotates his own losses. That is rare. Most players annotate their wins; there is no brand upside in annotating a defeat.

Ediz Gurel's presence on that list is the market pricing youth. A teenager getting an annotation platform says two things: his play is considered worth reading, and the publisher is buying the next five years of a name in advance. That is not journalism, it is investment, and it should be read like one.

And Aravindh Chithambaram's name — here I have to open my own bias. I cover Indian chess from Miami for a US audience. So when Aravindh appeared on the contents page, that was the real reason I opened the file. It is a bias, and hiding it only makes it larger. What is worth reading is that an Indian player's annotation is holding space inside an international training product — the return on India's chess pipeline is not only the GM count, it is also that its players are becoming the people who explain other people's games. That is the writing layer, and it is the layer I have argued repeatedly is running behind the pipeline.

Ten articles, three videos, and one shelf life

Werle, King, Ris — all three are experienced presenters, and three videos means the publisher knows a slice of the customer base wants to watch rather than read. The question about the ten articles is not whether they are good. It is how long they last. I am pre-registering this as a hypothesis now so I cannot retrofit it to the results later: the shelf life of an opening idea printed in a mass-circulation training product is shorter than that product's publication cycle. The test is straightforward — take the lines printed in #225 and track the engine evaluation of those same positions across 2600-plus games over the following twelve months. If the average evaluation from move three to move six drifts toward zero within three months, the idea is dead. If it does not drift, my hypothesis is wrong and I will publish that too. It is the only way a reader can trust me.

The economics of the format are hidden in the same issue. Download or booklet-plus-key, plus a ChessBase Book edition for iPad and tablet. That tells you who the customer is: the club player with a tablet and a rating between 1800 and 2200. That fact sets the depth of the annotation. A 2200 player does not need the full engine tree; he needs the idea and one move he can try in his own game tomorrow. The truth of a training product is that it chooses what not to teach far more than it teaches. The 27 miniatures are the clearest example of that selection: they are the fastest pages to read, which is why they are in the issue.

The part where I have to break my own line

I said above that the miniature rate is a proxy for preparation failure. That is true and it is also incomplete. Those 27 miniatures are the least transferable content in the issue. You cannot use them in your own games, because every one is a one-off opening accident — a combination produced by two players' preparation colliding on a particular day, never to be produced again. If there is anything for a club player to learn, it is only which lines are most dangerous right now.

Then the reverse is also true, and this is the real point: a short loss admits no excuse. Losing in 22 moves means there was a hole in the preparation, and somebody had already seen the hole. In a long game, fatigue, time pressure and form are all available as excuses. A miniature offers none. In that sense the collection is honest, even though it was assembled by selection bias.

And one thing I cannot model, and will not: the weight of playing in front of a home crowd in Prague if your name is Navara, or the pleasure of crushing someone in twenty moves — neither has a centipawn value. I concede it and leave it there.

What to watch next

The next contents page comes out and I will count the same thing first: how many miniatures. If the number rises, the opening preparation arms race has accelerated — and so has the fun. If it falls, the game is getting longer and more careful, which is bad news for a training product and good news for chess. Neither outcome is a 'golden generation.' It is one more data point.

And I hope the #226 contents page prints the denominator too. Somewhere in the spreadsheet a story was waiting to be read; just let it state its own terms.