GM Wesley So broke out to the sole lead of the 2026 Sinquefield Cup with a win, with the black pieces, over GM Fabiano Caruana. There were two more decisive games: GM Vincent Keymer bounced back from yesterday’s loss with a win against GM Praggnanandhaa Rameshbabu and GM Sam Sevian pulled water from stone against GM Anish Giri in an opposite-color bishop endgame to win after 110 moves. GMs Maxime Vachier-Lagrave and Levon Aronian are a half-point behind So, after making draws with GMs Javokhir Sindarov and Jorden van Foreest.
Round three was the quietest so far at the 2026 Cairns Cup. GM Divya Deshmukh jumped to third place after a second win against GM Alexandra Kosteniuk, a third loss for the latter. GM Tan Zhongyi and IM Alice Lee stay in the lead after making draws with GM Anna Muzychuk and GM Bibisara Assaubayeva. There were two more draws in GM Humpy Koneru vs. IM Carissa Yip and GM Vaishali Rameshbabu vs. IM Stavroula Tsolakidou.
Round four of both tournaments is on Thursday, August 13, starting at 1 p.m. ET / 19:00 CEST / 10:30 p.m. IST.
So jumps to the sole lead, while Keymer is a point behind. Eight out of 15 games, in the first three rounds so far, have been decisive.
Sinquefield Cup | Round 3 Standings
Divya won the only decisive game to reach sole third, while Kosteniuk continues with zero points after three rounds.
Cairns Cup | Round 3 Standings
Sinquefield Cup Round 3: So Takes Sole Lead
So’s victory against Caruana was the first game to end. It was an opening disaster for the world number-two, who had prepared something in the sharp Samisch Variation of the Nimzo-Indian Defense. What he had prepared wasn’t clear, however, as he sank into a 30-minute think on move 14, with his pawn hanging on c4 and White needing to attack. Curiously, So said he studied the same line earlier this year, for White, in preparation for the U.S. Championship.
White’s best continuation was the crude 14.Rf4, followed by Rh6 and dangling the coffeehouse threat of Bxh6 over Black’s head. But Caruana instead played 14.e5, the bailout, transitioning into a pawn-down endgame. On this move, So said, “I’m not getting checkmated no more.”
As his podcast co-host GM Cristian Chirila diagnosed, “The gods of chess simply punished Fabi in this one because he went against his nature. Rf4 was his nature, his fighting spirit… he tried to bailout, and it wasn’t a clean bailout.”
The second decisive result was Keymer vs. Praggnanandhaa, an opening disaster for the Indian grandmaster. Keymer lost a winning position against Aronian the previous day and said, “I guess it was about the most painful and unnecessary loss in a long time.” Now he’s back on 50 percent.
Something went wrong for Praggnanandhaa early on, and by move 11 in the Catalan Opening, GM Peter Svidler quipped, “There’s risk-taking and then there’s this.”
Praggnanandhaa still put up a great fight and got back into the game—that is, until 37…Na3?, an instantly losing move. Keymer launched his queen onto the kingside and won with a unique checkmate, with two knights. GM Rafael Leitao goes over the Game of the Day below.
Meanwhile, Sindarov vs. Vachier-Lagrave and Van Foreest vs. Aronian ended in draws, but both games were sharp. Sindarov vs. Vachier-Lagrave was a Queen’s Gambit Accepted; Black found a nice pawn sacrifice, and although White was better at some points, the advantage was never massive. Van Foreest was a pawn up with realistic chances to win, but Aronian escaped again—except with a draw this time, not a win.
Sevian vs. Giri reached an opposite-color bishop endgame that looked likely to be a draw, but the young American ground out a long win, with two pawns vs. one pawn on the same side of the board. Sevian missed a direct win on move 39, and it took him another 71 moves to get the deserved result.Â
Aronian has the white pieces against the leader on Thursday. An especially exciting clash of generations is Vachier-Lagrave vs. Keymer.
Round 4 Pairings
Cairns Cup Round 3: Divya Scores 2nd Win, 3rd Loss For Kosteniuk
The majority of games were solid this round after the bloodshed over the two days prior. Divya scored the only win, and it was kind of a self-destruction by Kosteniuk in the opening. By move nine, Black was already better with 9…e6!. Kosteniuk’s demons in the first rounds have multiplied as the former world champion sits on 0/3.
Muzychuk vs. Tan was a solid draw in the Alapin Sicilian (99.3 and 99.5 accuracy, respectively). We saw sharper fights in Lee vs. Assaubayeva, which even started in the King’s Indian Defense, and Humpy vs. Yip, where both sides enjoyed advantages at different points of the game. But they ended in draws, leaving the rest of the scoreboard unchanged.
In round four, Tan has the white pieces against Vaishali, while Lee will defend with the black pieces against Tsolakidou. We will see if Kosteniuk can find her form on Thursday, but she’s playing the highest seed, Assaubayeva.
Round 4 Pairings:
The 2026 Sinquefield Cup is the fifth and final leg of the 2026 Grand Chess Tour. Ten players competed in a classical round-robin tournament with a $475,000 prize fund and counts for qualification into the Grand Chess Tour Finals. It runs alongside the 2026 Cairns Cup, which is also a 10-player round-robin featuring some of the strongest women in the world, with a prize fund of $250,000.
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