When the Board Falls Silent: Why Vietnamese Chess Needs Data More Than Inspiration

When I was young, I heard a coach tell a student: “This move doesn't feel right.” Feel. In a sport where every move can be measured with numbers, from average centipawn loss (ACPL) to accuracy expressed in percentages, we still tend to use “feeling” as an answer. Not that feeling is meaningless, but when it stands alone, it easily becomes a trap. Just last week, I received a ten-page analysis of an important game. I opened the file, ready to see beautiful attacking lines and spectacular sacrifices. But when I opened it, all the data fields were empty. Player name: none. Tournament name: none. Number of moves, course of play, position: none. The author had attached a single line: “Insufficient data, I cannot analyze.” I remember smiling. Some people would turn ten blank pages into ten pages of confident judgments, because they think readers have no way to verify. But the author of this report chose the harder path: saying “no” to fabrication. That gesture reminded me of the quietest games I have ever watched, and of a much larger question: is Vietnamese chess advancing through data, or through empty assertions? Vietnamese chess does not lack talent. Le Quang Liem is the clearest proof. He is the first Vietnamese player to cross the 2700 Elo mark, ranked in the world's top 20, world blitz champion in 2026. But Liem's journey is not a story of pure genius. Anyone who follows his games sees extremely careful opening preparation, a vast database personalized for each opponent. When he chooses a sideline in the Caro-Kann, that is not impulsive inspiration; it is the result of checking hundreds of games, testing with engines, keeping one small corner the opponent can hardly prepare for. Nguyen Ngoc Truong Son, an older contemporary, also plays that way. Son does not rush into the wildest variations, but his preparation map is impressive. One season I watched him in the waiting room, noting each variation into a thin notebook. A boy sitting next to him asked: “Brother, why write so much?” Son looked up and smiled: “Because memory can lie, paper cannot.” That saying stayed with me for years. A single pass can be the answer to every doubt — in chess, a line of notes can be too. But let us speak plainly about the price of missing data. In most youth chess training centers in Vietnam, coaching is inherited: the teacher opens a book, the student copies variations. Very few places have a dedicated analysis room, a massive database of games, or specialists who read each player's heat maps. Meanwhile, leading countries have built entire systems: every game of a young athlete is recorded, fed into a machine, compared against the global database. When a 12-year-old plays a wrong move, the system immediately shows: this move appeared 47 times, 43 times leading to loss. No need to argue, the number has already spoken. I once ran an interesting test for young Vietnamese players. No computer needed; they just had to rewrite the game they just played and evaluate which move had put them in trouble. Half of them misremembered the course of the game after only ten minutes. Of the remaining half, when asked “which move was wrong”, they answered “I don't know.” That is nothing to be ashamed of; it is a consequence of never being taught to critique oneself with data. But it reveals a gap: we can teach children how to move a rook, but not how to re-read themselves. ACPL — Average Centipawn Loss, the average deviation of a move from the best engine move — is a mirror of a player's stability. A strong player usually keeps ACPL below 15 in classical games; an outstanding game can go below 10. But ACPL only means something in context: if you have been forced into defense for thirty moves, your ACPL will be higher than usual even if you played quite well. A novice reader will rush to conclude “this player is bad”. Someone who knows how to read the numbers will review the position, look at the type of difficulty, and only then speak. Tactics never lie, only people read them wrong. There is one way of reading numbers that irritates me: reading Elo like a stock ticker, divorced from context. The Elo 2600 of a 16-year-old rising star is not the same as the Elo 2600 of a 35-year-old past their peak. People see two identical numbers and conclude two identical strengths. Wrong. To understand a player, you must place the number next to age, time budget, and the depth of their opening repertoire. Just as in football, 60% possession can be a dull match full of sideways passes; a high Elo can also hide an unadventurous style. What troubles me most is a culture that prefers assertions over verification. On forums and social media, every time a young player achieves a good result, people immediately call them “prodigy”, “best of a generation”. When that same player fails at an international event, those same words quickly turn away, saying “expectations were too high”. Both sides rarely answer one question: where does that result come from? Strong or weak opposition? How sustainable is the form? What is the win rate with the black pieces? I remember the semifinal of an international chess tournament held in Hanoi a few years ago. A young Vietnamese player was trailing, but instead of panicking, he calmly exchanged queens on move thirty. The spectators around me whispered: “After a queen trade, it will be a draw, he gave up early.” I said nothing, but I had previously watched the opponent's games. The opponent was a player with a very high win rate in endgames, but in quiet positions, he often lost his rhythm. Our young player was not giving up; he was steering the game into a zone where data showed the opponent was weakest. He won twenty moves later; no one understood why, except those who had studied the files. That is when I understood why I write: People say girls know nothing about tactics. So I write for them to read. Many people do not read to understand; they read to find a ready-made story. And the ready-made story is usually much simpler than reality. Sometimes, to understand a match, you must stand in silence longer than others can endure. I have spent many nights rewatching games on mute, observing only how players moved their pieces. Without the commentator's voice, without applause, everything becomes clearer: a rook sliding to an open file, a knight quietly occupying a central square, a bishop aiming at the enemy king. In that silence, data becomes the only voice left. There is something rarely mentioned: the young generation does not lack data, they lack the ability to resist being obsessed by it. A student of mine once told me he turned on Stockfish, saw the number +1.2, and had no idea what to do next. The engine said he was winning, but it did not explain why. When the opponent made an irrational move on move fifteen, his evaluation collapsed. That is the paradox: the more you depend on numerical evaluation, the easier it is to lose the ability to evaluate through structure. Data is like a chess game — if you do not understand the logic inside, every number is just bait. I remember an expensive lesson from my own work. In 2026, when the pandemic stopped every tournament and football stadiums were empty, I turned to chess more, because chess is the only sport that reveals human character fully without spectators. When the stands are empty, you hear the blades of grass rustling. That is real football. In chess, when all outside noise disappears, you hear the clock ticking, the pieces touching the wooden board, the sound of each decision. Those decisions are never luck. Before a pawn advances two squares, at least three layers of analysis have already taken place: what the opponent just played, how many known games this position has appeared in, and what the best move is according to data. A great player is one who holds all three layers in mind at once. So when I read that empty report, I did not see failure. I saw a correct declaration about the craft of sports writing: if you do not have data, say you do not have data; do not invent a beautiful story to fill the void. Vietnamese chess is at a crossroads. One person can take a deep breath, stand up, and say: “I need to review the position, I am not certain yet.” Another can cross their arms, stare at the opponent, and play a random move just to look strong. The generation of Vietnamese players today — Liem, Truong Son, and younger faces — they have shown us the value of the first kind of person. Sports writers, sports readers, coaches, we all have to learn that. The pitch becomes wider when there is no noise. The chessboard too. When we stop rushing to assert, stop handing out titles in moments of heat, stop the habit of judging results without examining the path, only then does the board reveal its full depth. A move can be an answer, but only when we place it in the right chain of reasoning. And if we do not have enough data, let us say what that analyst said: I cannot conclude yet. That is not weakness; it is respect for the game, and for the people sitting at the board, patiently waiting for their opponent.