Dudin vs Gukesh in the 2026 Olympiad final round: the Rossolimo, 18...Kf8 and the clock

Short answer

In round 11 of the Samarkand Olympiad, on 27 September 2026, Gleb Dudin (Hungary, 2560) beat Gukesh (India, 2703) on board four, and Hungary drew with India 2-2. The game was a Rossolimo Sicilian in which White opened the queenside with a3 and b4. The engine marks the turn in two moves: 17...Qc4, which took White's edge from +0.81 to +1.61, and 18...Kf8, which took it to +3.03. Gukesh spent twelve minutes on the second and played the next 22 moves with less than twelve. The result did not change the medals: after the draw India finished on 18 points and took silver on tiebreak.

Event: 46th FIDE Chess Olympiad

How this was compiled: Checked on 29 September 2026. Moves and clock times come from the official round-11 PGN broadcast on Lichess; match scores and standings from chess-results. Evaluations were measured by us with Stockfish 19 at depth 24, not copied from the broadcast annotation.

The essentials in a few lines

• Dudin (2560) beat Gukesh (2703) with White on board four in round 11, and Hungary drew with India 2-2; Erigaisi beat Leko and Gledura drew with Nihal.
• The opening was a Rossolimo with 3...g6 and ...e5, in which White played a3 and b4 to open the b-file against the c5 pawn.
• Measured by us: 17...Qc4 took the evaluation from +0.81 to +1.61, and 18...Kf8, after twelve minutes' thought, to +3.03; 18...Bxf3 stayed at +1.61.
• Gukesh reached move 40 with 43 seconds on the clock, and Dudin with 54; Black resigned after 59.Rxd6.
• The result did not move the podium: India finished on 18 points and took silver ahead of Germany on tiebreak, and winning the match would have given 19, still behind Uzbekistan's 20.

The match and what was at stake

The four games of India v Hungary were Praggnanandhaa v Rapport (draw), Leko v Erigaisi (Erigaisi won), Nihal v Gledura (draw) and Dudin v Gukesh. Counting the other three games, India had 2-1; a draw from Gukesh would have won the match.

It is worth doing the arithmetic before turning the loss into drama. With a win, India would have had 19 points; Uzbekistan, who beat Ukraine 2.5-1.5 in the same round, finished on 20. With the draw, India finished on 18, level with Germany, and took silver on tiebreak. Gukesh's loss cost the match, not a medal.

For Hungary, the draw was worth a match point and seventh place, on 17 points. Dudin finished the Olympiad on 8 out of 10 with a 2738 performance, the highest among the open's reserves, and won the board-five gold. In this game he played on board four: the line-up changes each round, but the individual medal follows the registration order, and Dudin was registered as reserve.

The opening: Rossolimo with a3 and b4

With ...g6 and ...e5, Black builds a structure in which the g7 bishop bites on its own e5 pawn. The a3 and b4 plan hits the c5 pawn before Black finishes developing: if Black takes on b4, the a-file opens for White's rook; if Black allows 8.bxc5 dxc5, as happened, the b-file is open and the white knight gets the route b3, a5 and b7.

Gukesh spent more than fifteen minutes on 7...d6, and after 9.Bg5 the engine gives White +0.32; 9...Qd6, his choice, sits at +0.42. White exchanged both bishops for knights on e7 and c6 and left Black with the king on e7 and doubled c-pawns. The resulting position is the one move 17 has to solve.

For anyone playing the Rossolimo with White, the game is a good model of how the exchange on c6 is only worth it when the doubled pawn becomes a target. For anyone answering with ...g6, it is a reminder that ...e5 shuts in the g7 bishop, and that a king left in the centre after the exchanges becomes the target of the pieces that remain.

17...Qc4 and 18...Kf8: where the game turned

After 17.Nb7 the white knight is stuck in Black's camp, but it hits d6 and c5. The black queen could retreat to b6 and keep White's edge at +0.81. Gukesh thought for nine and a half minutes and played 17...Qc4, which attacks the c2 pawn and allows the white queen into d2, threatening Qd6+. The evaluation rises to +1.61.

On the next move came the error that decided it. With 23:51 on the clock, Gukesh thought for twelve minutes and took the king off the e-file with 18...Kf8. The move does not deal with the threat of Qd6+, which is still check along the diagonal, and it frees d6 for the knight: 19.Nd6 arrives with tempo on the queen, 20.Ng5 and 21.Ngxf7 bring the second knight to the f7 pawn, and the evaluation goes to +3.03. The alternatives were measured: 18...Bxf3 stayed at +1.61, 18...Rhd8 gave +6.66 and 18...Qc5 gave +9.73.

The lesson is not 'don't move the king'. It is that, in a worse position under attack, exchanging one of the attackers is usually worth more than moving the king. 18...Bxf3 removes the knight that would later reach f7 and keeps the deficit at a defensible level.

The clock after move 18

The Olympiad time control is 90 minutes for 40 moves, plus 30 minutes for the rest of the game, with a 30-second increment from move one. That means twelve minutes spent on move 18 come out of a budget that must cover 22 more moves before the extra time, and that the increment alone gives half a minute per move.

The official PGN shows both players in trouble. Dudin had 35:46 after 17.Nb7 and was down to 3:02 on move 38; Gukesh passed move 30 with just over three minutes and played the last ten moves before the control with under four minutes. On move 41 both received 30 minutes, and the game went on until 59.Rxd6, when Black resigned.

For a club player, the useful question is not whether Gukesh thought too long, but where the time goes. A critical move deserves the clock; but in a position where the engine already gave White the edge, the twelve minutes bought a worse move and left less time to defend everything that followed.

Frequently asked questions

Update log

• 2026-09-29 — First published: moves and times from the official PGN, evaluations measured with Stockfish 19.

Sources

• 46th FIDE Chess Olympiad Samarkand 2026 | Open — round 11 (PGN with clock times) — Lichess
• 46th Chess Olympiad 2026 Open — round 11 — chess-results
• 46th Chess Olympiad 2026 Open — board prizes — chess-results

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