One move broke everything

Esipenko’s Fatal Mistake. The Move That Turned a Possible Win into a Quick Defeat

At the Candidates Tournament, there are almost no “ordinary” mistakes. Here, the price of every decision is higher than in most supertournaments. One inaccurate move can do more than spoil a position — it can flip the entire storyline of the game, the player’s mood, and the tone of the whole tournament start. That is exactly what happened to Andrey Esipenko in round one of Candidates 2026 against Javokhir Sindarov. By the end of the day, Sindarov had won, and Esipenko himself directly named 27…Bxf3 as the critical moment of the game.

A Game That Had Been Going to Plan

The most painful part of this story is that before the turning point, things were going very well for Esipenko. In its official report, FIDE directly noted that the Russian grandmaster handled the opening well with Black. That is an important detail: this was not a case where he was worse from the start and collapsed under pressure. On the contrary, he came out of the opening confidently, got a playable position, and gradually steered the game toward a point where he could fight not just for a draw, but for the full point.

Against that backdrop, Sindarov’s own comment becomes especially revealing. According to him, after 27.Bd1 he had only around six minutes left, while Esipenko had about thirty, and at that moment he was already thinking that he was probably losing. In other words, both psychologically and on the clock, the initiative was on the Russian player’s side. In such moments, people usually say that the game has “ripened” for conversion.

The Move After Which the Game Stopped Obeying Esipenko

And this is where the decisive turn came. Esipenko played 27…Bxf3, essentially calculating what he believed would be a strong, and perhaps even winning, continuation. But that very move became the point after which the position stopped following his logic. FIDE quotes Esipenko almost without softening it: “I think my mistake was 27…Bxf3, and afterwards I didn’t have enough time and couldn’t figure out what to do.” Sindarov immediately confirmed his opponent’s assessment, explaining that after this he suddenly got room to maneuver, while Black’s king no longer felt safe.

Chess.com described the same moment even more harshly: Esipenko played what he thought was a winning blow on f3, only to run into his opponent’s “devilish tactical resources.” That may be the best description of what happened. The mistake was not of the simple kind, like hanging a piece in one move. It was more dangerous: the player saw a chance to finish the game beautifully, but in reality opened the door to counterplay that could no longer be stopped.

Why This Mistake Looks Especially Fatal

There are mistakes that still leave room for survival. And then there are those after which the game collapses quickly, because the very foundation of the position breaks apart. Judging by the post-game comments, that is exactly what happened here. After 27…Bxf3, Esipenko not only gave up the initiative, but entered a phase where he needed to find only moves immediately while already in time trouble. He himself admitted that after the mistake he simply could no longer work out what to do next. Sindarov, by contrast, felt as though he had woken up during the game and began to play much more accurately.

That is why this move can be called fatal. Not because it looked spectacular. But because it reversed both the evaluation of the position and the psychological flow of the game in a single moment. Before it, Esipenko controlled the course of the struggle. After it, Sindarov was the one who sensed opportunity — and never let go.

The Candidates Does Not Forgive This Kind of Swing

The particular cruelty of this story is also in the tournament context. After round one, Sindarov joined the group of leaders alongside Fabiano Caruana and Praggnanandhaa, while Esipenko was left at the bottom of the table with zero points. In round two, he was immediately facing Hikaru Nakamura. In a 14-round tournament, one loss is not yet a disaster, but it is exactly these kinds of games that are often remembered later as the missed turning points of the entire marathon.

That is where the main drama lies. If Esipenko had converted his advantage or at least calmly brought the game to the logical result suggested by the position, the discussion after the round would have sounded completely different. People would have been talking about strong opening preparation, mature positional control, and a serious claim for the tournament. But one move changed the tone entirely: instead of talking about a possible win, everyone began talking about how a winning or highly promising game had turned into a quick defeat.

What This Game Said About Esipenko Himself

For all the pain of the loss, this story also has another side. Before the fatal moment, Esipenko genuinely looked very convincing. He was better prepared in the opening, better on the clock, and had forced one of the most dangerous young players in the event to seriously think he was already close to losing. That is bad news for Esipenko in the context of this particular game — and at the same time good news for his supporters over the long distance. It means the fighting resource is there.

But the Candidates measures not only the strength of positions. It also measures the ability not to snap on that one move when the temptation arises to finish everything at once. In that sense, the game against Sindarov became a harsh reminder for Esipenko: at this level, a winning mood can sometimes be more dangerous than a bad position. Because it is exactly that feeling which pushes a player toward the move that seems decisive, but in reality lets the opponent off the leash. That is already an inference drawn from the official comments and the course of the game, rather than a direct quote.

Conclusion

Esipenko’s loss in round one of Candidates 2026 was painful not because of the score by itself, but because of the script. He came well out of the opening, held the threads of the game in his hands, had a huge advantage on the clock, and then with one move — 27…Bxf3 — shifted the game from the category of “you can press” into the category of “you must urgently try to survive.” And survival was no longer possible.

That is exactly why this mistake will be remembered as fatal. Not because it was the crudest blunder in tournament history. But because it came at the moment when victory had already begun to appear on the horizon. And at the Candidates Tournament, that is almost always the most painful kind of defeat.