Weissenhaus SF: Keymer stuns Carlsen

by André Schulz
2/11/2025 – Vincent Keymer will keep good memories of his Tuesday game in Weissenhaus, as he managed to beat Magnus Carlsen in the first semifinal game at Freestyle Chess tournament. Keymer's win was achieved in the only decisive game on the day. The other semifinal saw Javokhir Sindarov missing a chance to beat Fabiano Caruana in a tricky endgame. | Photo: Freestyle Chess / Lennart Ootes

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No more opening theory?

New game, new luck. Unlike classical chess, where play always begins from the same starting position, in Freestyle Chess, you always get "a new hand", a new position. However, unlike in card games, both sides still play with the same pieces and the same starting position, so the element of chance remains minimal.

The drawn position may not be entirely unfamiliar to the players. In fact, players or their assistants have already created databases with Chess960 or Freestyle games. Most of these games were played by engines. While it took humans roughly 175 years to research chess openings thoroughly (taking the London 1851 tournament as a starting point, though this is not entirely accurate), with computers, the process is now much faster.

DeepMind has demonstrated with AlphaZero that a computer, by playing against itself, can achieve the highest level of chess mastery in a short period, provided it is only given the rules of the game beforehand. If a company like Google were to decide to simulate all 959 other possible starting positions, a complete opening theory for all conceivable initial positions might be available in no time. However, no one could possibly memorise all of it - although...

Magnus Carlsen, Fabiano Caruana, Vincent Keymer and Javokhir Sindarov are the four players who have reached the semifinals. Carlsen and Caruana each defeated their quarter-final opponents, Nodirbek Abdusattorov and Gukesh Dommaraju, respectively, with a clear 2-0 victory. Keymer could have achieved the same result against Alireza Firouzja but settled for a draw in the second game of their quarterfinal despite having a technically winning position. Javokhir Sindarov had to go to tiebreaks against world number two Hikaru Nakamura, and won. Certainly a surprise.

The semifinal pairings are now Keymer versus Carlsen and Caruana versus Sindarov.

Javokhir Sindarov | Photo: Lennart Ootes

In Freestyle Chess, the same principle applies: whoever loses the first of the two match games is at a disadvantage. However, in this chess variant, achieving a draw appears to be much more difficult. One can understand why Carlsen enjoys Freestyle Chess more than classical chess. In many classical chess games, his opponents play solely for a draw and prepare their opening lines accordingly. Here, that is not possible.

Keymer, playing white against Carlsen, opened with 1.g4. After a few moves, a kind of King's Indian structure emerged, albeit with all the pieces on "incorrect" squares - for example, both kings were on the queenside. Keymer had a slight space advantage, and he managed to coordinate his pieces more effectively.

Magnus Carlsen | Photo: Stev Bonhage

Carlsen had a solid position but lacked active play. Shortly before the time control, he devised a plan to gain activity, but it turned out to be ineffective.

Keymer, Vincent27311–0Carlsen, Magnus2833
Freestyle Chess Grand Slam Tour Knock O
Weissenhaus, Germany11.02.2025[Schulz, A]
1.g4 Ng6 2.Nb3 e5 3.Ng3 f6 4.c4 0-0-0 A very, very short long castle. 5.d4 Nb6 6.d5 d6
7.Bf5+ Bd7 White intends to place his pawns on light squares, and the exchange of the light-squared bishop could be favourable. 8.f3 a6 9.e4 Nf4 10.Bxd7+ Rxd7 11.Kc2 Since the rook stands well on c1, White "castles by hand". However, it will take some time to complete the process. Ba7 At some point, a knight retreat with discovered attack is a potential threat. After 11...Nxc4 12.Kb1 there is Nb6? 12...b5 13.Na5 Nxa5 14.Bxa5 also benefits White. However, Black has the annoying intermediate move 12...Nh3 13.Qxb6+- which is very good for White. 12.Bd2 Kb8 13.Be3
White neutralises the attack. 13...Nh3 A brief knight interlude that does not yield much. White enjoys a slightly more comfortable position thanks to his spatial advantage. 14.Qg2 Nf4 15.Qf2 h5 Seeking counterplay. 16.Rfd1 hxg4 17.fxg4 Nc8 18.c5 18.Bxa7+ Nxa7 19.c5 18...dxc5 19.Bxc5 g6 20.Bxa7+ Nxa7 21.Kb1
Castling completed. Keymer was behind on the clock but gradually made up for the time deficit. 21...Qh7 The first move of Black's queen, placing itself on the same diagonal as the white king. 22.Nc5 Rd6 23.Ne2 23.a4± would have prevented the activation of the poorly placed a7-knight. 23...Nxe2 24.Qxe2 Nb5 25.Qc4 Rc8 25...Nd4? 26.Qb4 Rb6 27.Nxa6+ bxa6 28.Qxf8++- 25...Rb6!?= 26.a4 Nd4 27.g5 Rcd8 28.gxf6 Rxf6 29.Rf1 Rb6 30.Rf2
Chances are roughly equal. Both players were running low on time. 30...g5 31.Ka2 Ka7 32.Rcf1 g4? 32...Rc8= 33.Qc3?! 33.Rf7+- with the beautiful tactical idea: Qxh2 34.R1f2 Qg3 35.Rxc7‼ Qxf2 36.Rxb7+ Rxb7 37.Qxa6+ Kb8 38.Qxb7# 33...Nf3 34.Rg2 Rg8 35.Rff2 Rd6 36.Qe3 Ka8 37.Ne6
Both sides have strong knight outposts. However, Black's knight is rather ineffective. 37...c6? Black finally wants to gain acticity, but his position does not allow it. 37...Kb8 38.Qa3+- 38.Qb6+- is also good. 38...Rxe6 38...Qd7 39.Rxf3+- 38...Rd7 39.Nf8+- 39.dxe6 Rc8 39...Rc8 40.Rxg4 Nh4 41.Rf7+-
1–0

Keymer's father congratulating his son | Photo: Lennart Ootes

At the end of the day, this was the only decisive game. The game between Caruana and Sindarov had a completely different nature and remained balanced throughout. The game reached an endgame with two rooks and a minor piece per side, where Sindarov suddenly got a chance to chase the king in what would have been a winning attack. The youngster failed to find the winning plan.

Caruana, Fabiano2803½–½Sindarov, Javokhir2700
Freestyle Chess GST Weissenhaus KO 2025
11.02.2025[Carlos Colodro]
1.f3 f5 2.c4 Nb6 3.c5 Nd5 4.Ng3 f4 5.Ne4 c6 6.Qd4 Qe6 7.Qa4 Bg6 8.Bf2 0-0 9.0-0 b5 10.cxb6 axb6 11.Qb3 Be5 12.Nc2 Nf7 13.Nd4 Bxd4 14.Bxd4 c5 15.Bf2 Nd6 16.Nxd6 exd6 17.Bxg6 hxg6 18.a3 Ne7 19.Rc3 g5 20.Re1 Nd5 21.Rc4 Qf7 22.e4 fxe3 23.dxe3 Nf6 24.Bg3 g4 25.Qd3 gxf3 26.gxf3 d5 27.Rh4 Rc6 28.Qf5 Qe6 29.Qg6 Qe8 30.Qxe8 Rxe8 31.Bf2 Rce6 32.Kf1 Re5 33.Ra4 Nh5 34.Ra6 Rf5 35.Rxb6 Rxf3 36.Kg2 Rf5 37.a4 Re4 38.a5 Ra4 39.a6 Rf6 40.Rb8+ Kh7 41.Rd1 Rf5 42.Rb6 Nf6 43.Bg3 Ng4 44.Rd3 d4 45.exd4 cxd4
The position is dynamically balanced. White has a far-advanced passer on the a-file, but Black has plenty of activity with his strong knoght on g4. An suddenly, Caruana faltered with 46.h4 There are a few natural moves that keep the balance. Perhaps the most straightforward is 46.Rf3 Ne3+ 47.Kf2 and e.g.: Rfa5 48.Rf7 Rxa6 49.Rxa6 Rxa6 50.Rxd7 with an equal position. 46...Ne3+ 47.Kh2 Rfa5 Sindarov fails to find the winning continuation, one that required deep calculation (the Uzbek grandmaster had less than 4 minutes on the clock). 47...Rf1 setting up a coordinated attack with the two rooks on the first rank, e.g.: 48.a7 48.Ra3 does not save White due to Rc4 and e.g.: 49.a7 Rc2+ 50.Kh3 Rh1+ 51.Bh2 Rg2 51...Rcxh2+ also wins. 52.a8Q Rhxh2# 48...Raa1 48...Rxa7 also wins, but is not as "principled". 49.Bb8 Rf2+ 50.Kg3 Rg2+ 51.Kf4 Rf1+
The king is forced to escape to the centre of the board. 52.Ke4 Rg4+ 53.Ke5 Nc4+ Winning the rook on b6 and controlling the all-important a8-square. 54.Kd5 Nxb6+ 55.Kc5 Na8 Black wins.
48.Be1 Rxa6 49.Rxa6 Rxa6 50.Rxd4 Nc2 51.Rd1
½–½

Caruana and Sindarov | Photo: Stev Bonhage

Besides the two semifinals, matches to decide who gets 5th to 8th place also took place, with Nakamura facing Gukesh and Abdusattorov facing Firouzja.

These two encounters also ended drawn. Abdusattorov had the initiative with White against Firouzja for some time, but the game led to an equal knight endgame. Lasting 59 moves, the game between Hikaru Nakamura and Gukesh was the longest of the day. However, it also ended without a winner.

Hikaru Nakamura | Photo: Lennart Ootes

Gukesh Dommaraju, the classical chess world champion | Photo: Stev Bonhage

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André Schulz started working for ChessBase in 1991 and is an editor of ChessBase News.
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