Vietnamese Chess and the Empty Data Sheet After Every National Tournament Game

On my computer screen in Nha Trang, I reopened the file of a game I had watched live at the national chess championship. The data table has seven columns. The first records the move number. The other six are empty: no average centipawn loss, no engine match rate, no thinking time per move, no piece coordinates by the minute. I sat looking at that table for about ten minutes before I realised I was staring at exactly what my job is supposed to fill.

That game was genuinely good. Black sacrificed a piece to open a file, the hall went silent for a few seconds, then the murmuring rose like surf. I remember that feeling clearly, and the way both players sat motionless while the clock ran. But when I need to prove why that sacrifice worked, I have nothing in hand but my own memory.

Vietnamese chess has a paradox that only people who work with data see clearly. We have players of international standard, a youth tournament system that runs every year, and thousands of games organised from the cities to the provinces. Yet the archive is thin as carbon paper. Results are published, rankings sometimes appear, and the data underneath each game is kept by almost nobody.

Before returning to chess, I worked as a sports science researcher for a football club in V.League. There, every training session was recorded, every player had a GPS file, every match had passing statistics and a heat map. When I moved to chess, I carried that habit with me and walked straight into a wall: to analyse a single game, I had to hand-enter every move from photographs of the board. For a 60-move game, that is two hours of work for a match the audience watched in three.

The empty-stadium season taught me that applause is not merely sound, but part of the structure of a match. In 2026, when stadiums closed, I took part in a survey of twelve clubs and recorded that home teams' passing accuracy fell by roughly seven percent. The absence of a crowd produced data, even though it was data about something that did not exist. Vietnamese chess faces the opposite situation: the crowd is there, the games are there, but their technical traces vanish the moment the arbiter announces the result.

What matters is not where the ball stands but where it is about to fall, and that is the real spatial piece. In chess, the place the ball is about to fall is the square a piece will reach in three moves, the file that will open after a trade, the gap the opponent is forced to leave behind when their king moves. To see those things, I need data from the whole game rather than a single move, and I need to be able to line them up into a comparable series.

When I tried to apply the multi-layer framework I normally use for deep analysis to the Vietnamese chess record, the result repeated at every layer: insufficient information to conclude. What matters is that this emptiness is systemic, not the accident of one tournament or one season.

The technical layer comes first. I want to measure a young player's average centipawn loss across a whole tournament, to learn whether they bleed points in the middlegame or the endgame. No data. I want to measure engine match rate over the first fifteen moves, to learn how far their opening preparation goes and who it was prepared for. No data. To assess stability under time pressure, I have to tap a stopwatch by hand from video, with an error of at least a few seconds per move, and for a fast player that error is enough to flip the conclusion. What we lack is not an analysis tool but the raw material for that tool to run on.

The player layer follows immediately. The FIDE Elo system is the only figure we hold with any confidence, and it tells only part of the story. A player can hold a classical rating of 2400 yet lose repeatedly in blitz; another can sit a hundred points lower yet win nearly every direct encounter. To detect that kind of bogey opponent, I need a head-to-head table sorted by time control, and such a table exists only if someone compiles it. In strong chess nations this is routine work. In Vietnam it depends on whether one individual has the patience to spend six weeks rewatching footage. I once spent six weeks like that for an analysis of a V.League 2026 match, and I know the feeling of reopening an old file with nothing to compare it against.

The tournament layer is emptier still. We know who won, but rarely how strong the event really was. What was the average rating of the participants? How is the prize fund split between men and women? Was the draw rate in the final round unusually high because everyone needed a safe point? Was the schedule crammed into evening rounds that left the young players exhausted before the decisive round? A researcher has to answer these questions before saying anything about the standard of a tournament.

The landscape layer. The picture of Vietnamese chess is usually drawn with a few familiar names, among them Le Quang Liem, the first of our players to cross the FIDE 2700 mark. Beneath that leading group lies a silence few bother to measure. How many players under twenty hold a rating above 2300? Is this group progressing faster or slower than the same age cohort ten years ago? We photograph every moment but never film the whole process, so there is no way to know whether a talent is accelerating or stalling. For women players the gap is even wider, because women's events are recorded less and their international games are fewer.

The rules and governance layer raises the most serious problem. Chess carries the highest cheating risk of any mind sport, because a small device in a pocket is enough to change a result. Online events are expanding, young players contest hundreds of games a month on international platforms, yet domestic monitoring rests largely on trust and personal reputation. I am not saying cheating happens. I am saying we have no data to assert that it does not, and in a data-poor environment neither innocence nor suspicion can be verified.

The risk layer combines into a fairly clear picture. Competitive risk sits in the fact that young players must manage a dense calendar alone, with nobody measuring their load. Financial risk sits in the fact that sponsors see no indicator beyond ranking, so they do not know what they are funding. Psychological risk sits in the fact that a defeat is retold emotionally on social media with no data to check it against. Systemic risk sits in the fact that every conclusion about Vietnamese chess must be built on collective memory, and collective memory shifts with the storyteller.

The public narrative layer runs on a familiar cycle: a player wins a few games on the regional stage, the media builds a star, and a few months later nobody mentions them. That cycle is not wrong, but it lacks a baseline. To know whether an achievement is meaningful, I need to compare it to the same player last season, in the same time control, against the same group of opponents.

The industry transmission layer fares no better. From youth training to tournaments, from tournaments to media content, from content to sponsorship and derivative products, every link needs data to measure its effectiveness. Without data, each link simply copies the enthusiasm of the one before it, and the whole chain stands still.

The easiest explanation for all of this is a lack of money and people. I do not fully believe it. Chess recording software is already free. A PGN file holds an entire tournament in a few megabytes. What we lack is a habit, not a budget. At many youth events the arbiter writes the scoresheet by hand, signs it, stamps it, and files it in a bag. That paper is valid evidence and will sit there for twenty years. Nobody creates the electronic copy. We privilege administrative validity over the reuse of knowledge: a game is acknowledged as having happened, but not as something that can be learned from again.

There is a blind spot on the other side, and I want to name it because it is often skipped. Many will say that publishing all the data solves everything. I am not sure. Open data does not automatically produce understanding, and a seventeen-year-old dissected move by move in public can lose confidence at the most delicate stage of a career. The data gap and the privacy question are two different stories, and we need to settle both in order. Tactics are only complete when told in a language the players dare to believe, which means data has value only when the person reading it does not feel judged. A coach can tell a student that they erred on forty percent of endgame moves, but only when that number comes from a process both of them trust.

I still keep that empty table on my machine, named by date. Not to remind myself of a failure, but to remind myself that a tournament does not end when the arbiter announces the result. It ends when the game is stored, measured, and retold to someone who never sat in that hall.

If next season each national event needed only one person to re-enter the PGN and log thinking time per move, we would gain something eighteen years have not given us: a baseline for comparison. Which player is improving faster than their own self of two years ago, and who is standing still while the ranking still looks good? Vietnamese chess can answer those things, if it chooses to write them down.