Duda
Nepo
1/2
1/2
R14
Liren
Nakamura
1
0
R14 LIVE
Caruana
Firouzja
0
1
R14
Rapport
Radjabov
0
1
R14
Radjabov
Caruana
1/2
1/2
R13
Firouzja
Liren
1/2
1/2
R13
Nakamura
Duda
1
0
R13
Nepo
Rapport
1/2
1/2
R13
Nepo
Nakamura
1/2
1/2
R12
Duda
Firouzja
1/2
1/2
R12
Liren
Radjabov
0
1
R12
Rapport
Caruana
1/2
1/2
R12
Caruana
Liren
0
1
R11
Radjabov
Duda
1/2
1/2
R11
Firouzja
Nepo
0
1
R11
Nakamura
Rapport
1/2
1/2
R11
Nakamura
Firouzja
1
0
R10
Nepo
Radjabov
1/2
1/2
R10
Duda
Caruana
1
0
R10
Rapport
Liren
0
1
R10
Liren
Duda
1
0
R9
Caruana
Nepo
1/2
1/2
R9
Radjabov
Nakamura
1
0
R9
Firouzja
Rapport
1
0
R9
Firouzja
Radjabov
1/2
1/2
R8
Nakamura
Caruana
1
0
R8
Nepo
Liren
1/2
1/2
R8
Rapport
Duda
1
0
R8
Caruana
Radjabov
1
0
R7
Liren
Firouzja
1/2
1/2
R7
Duda
Nakamura
1/2
1/2
R7
Rapport
Nepo
0
1
R7
Nepo
Duda
1
0
R6
Nakamura
Liren
1/2
1/2
R6
Firouzja
Caruana
0
1
R6
Radjabov
Rapport
1/2
1/2
R6
Nakamura
Nepo
1/2
1/2
R5
Firouzja
Duda
1/2
1/2
R5
Radjabov
Liren
1/2
1/2
R5
Caruana
Rapport
1/2
1/2
R5
Liren
Caruana
1/2
1/2
R4
Duda
Radjabov
1/2
1/2
R4
Nepo
Firouzja
1
0
R4
Rapport
Nakamura
1/2
1/2
R4
Firouzja
Nakamura
1/2
1/2
R3
Radjabov
Nepo
1/2
1/2
R3
Caruana
Duda
1/2
1/2
R3
Liren
Rapport
1/2
1/2
R3
Duda
Liren
1/2
1/2
Nepo
Caruana
1/2
1/2
Nakamura
Radjabov
1
0
Rapport
Firouzja
1/2
1/2
Radjabov
Firouzja
1/2
1/2
Caruana
Nakamura
1
0
Liren
Nepo
0
1
Duda
Rapport
1/2
1/2
Aronian
MVL
0
1
TB 1.3
MVL
So
1
0
TB 1.2
So
Aronian
1
0
TB1.1
Dominguez
So
1/2
1/2
R9
Firouzja
MVL
0
1
R9
Deac
Caruana
1/2
1/2
R9
Rapport
Nepo
1/2
1/2
R9
Aronian
Mamedyarov
1/2
1/2
R9
Nepo
Aronian
1/2
1/2
R8
Caruana
Rapport
1/2
1/2
R8
MVL
Deac
1/2
1/2
R8
So
Firouzja
1/2
1/2
R8
Mamedyarov
Dominguez
1/2
1/2
R8
Firouzja
Dominguez
1
0
R7
Deac
So
1/2
1/2
R7
Rapport
MVL
0
1
R7
Aronian
Caruana
1/2
1/2
R7
Nepo
Mamedyarov
0
1
R7
Caruana
Nepo
1/2
1/2
R6
MVL
Aronian
0
1
R6
So
Rapport
1/2
1/2
R6
Dominguez
Deac
1
0
R6
Mamedyarov
Firouzja
1/2
1/2
R6
Deac
Firouzja
1/2
1/2
R5
Rapport
Dominguez
1/2
1/2
R5
Aronian
So
1/2
1/2
R5
Nepo
MVL
1/2
1/2
R5
Caruana
Mamedyarov
1
0
R5
MVL
Caruana
1
0
R4
So
Nepo
1
0
R4
Dominguez
Aronian
0
1
R4
Firouzja
Rapport
1/2
1/2
R4
Mamedyarov
Deac
1/2
1/2
R4
Rapport
Deac
0
1
R3
Aronian
Firouzja
1/2
1/2
R3
Nepo
Dominguez
1/2
1/2
R3
Caruana
So
1/2
1/2
R3
MVL
Mamedyarov
1/2
1/2
R3
So
MVL
1/2
1/2
R2
Dominguez
Caruana
1/2
1/2
R2
Firouzja
Nepo
0
1
R2
Deac
Aronian
1/2
1/2
R2
Mamedyarov
Rapport
1/2
1/2
R2
Aronian
Rapport
1/2
1/2
R1
Nepo
Deac
1/2
1/2
R1
Caruana
Firouzja
1/2
1/2
R1
MVL
Dominguez
1/2
1/2
R1
So
Mamedyarov
1
0
R1
MVL
Wang
1
0
Ding
Nepo
1
0
Giri
Alekseenko
0
1
Caruana
Grischuk
1/2
1/2
Grischuk
Giri
1
0
Ding
Alekseenko
1
0
MVL
Nepo
1/2
1/2
Caruana
Wang
1
0
Nepo
Wang
0
1
MVL
Alekseenko
1
0
Ding
Grischuk
1
Caruana
Giri
0
1
Ding
Giri
0
1
MVL
Grischuk
0
1
Wang
Alekseenko
1/2
1/2
Caruana
Nepo
1/2
1/2
ALekseenko
Nepo
0
1
Grischuk
Wang
1/2
1/2
Giri
MVL
1/2
1/2
Ding
Caruana
1/2
1/2
MVL
Ding Liren
1/2
1/2
Wang
Giri
0
1
Nepo
Grischuk
1/2
1/2
Caruana
Alekseenko
1/2
1/2
Grischuk
Alekseenko
0
1
Giri
Nepo
1/2
1/2
Ding
Wang
1/2
1/2
MVL
Caruana
0
1
Grischuk
Giri
1/2
1/2
Alekseenko
Ding
1/2
1/2
Nepo
MVL
0
1
Wang
Caruana
1/2
1/2
Caruana
MVL
1/2
1/2
In a fitting end to the season, Stockfish once again defeated its rivals to win the final event – the Fischer Random Chess final, thus completing a quadruple crown at the Top Chess Engine Championship! The four titles of Stockfish: Stockfish wins TCEC League / Stockfish wins TCEC Cup / Stockfish wins TCEC Swiss / Stockfish wins TCEC Fischer random More: TCEC official website
One might be tempted to say “of course Stockfish was going to win” after the results of the Leagues and Swiss, the FRC competition actually had quite a bit of drama. The group stages kept the top engines away from one another in the first stage, with most viewers expecting the Premier Division engines to qualify smoothly. It didn’t happen. In League A, Stoofvlees was the first casualty as a loss to Stockfish coupled with a strong performance by Rubichess led to Rubichess qualifying, tied for first with Stockfish. Group B, the only league without the “Big Three” (Komodo, Leela and Stockfish), still had three strong Premier Division-level engines in Berserk, rofChade and SlowChess. The three drew every game against each other, with rofChade narrowly winning the group and SlowChess eliminated on tiebreak.
League C served up a major surprise as Ethereal, playing with a special net optimized for FRC, won the group ahead of Leela and ScorpioNN. The three engines again drew every game against each other, but Ethereal kept pace with Leela as they smashed the lower-ranked engines, eventually taking first place on tiebreak. League D yielded an even bigger surprise as Revenge finished clear first, half a point ahead of Komodo Dragon.
With only Stockfish of the Big Three winning its League, the semifinals resulted in a Group of Death – all three of the Big Three were placed in Semileague 1. The high bias book led to a lot of decisive games, but Leela scored a rare double kill over rofChade to win the semileague, inflicting Stockfish’s first lost opening of the season on the way. Meanwhile Stockfish continued to dominate Komodo Dragon, winning an opening against it. As a result, Komodo Dragon was eliminated and failed to make the final league. Semileague 2 was less eventful, as Ethereal continued to play well, defeating all its rivals at least once and scoring another rare double kill over RubiChess. Berserk finished second, comfortably above Revenge.
It was only in the Final League that the streak of surprises ended. Stockfish and Leela left Ethereal and Berserk in the dust, scoring heavily against both engines. The two engines finished equal first, with Stockfish winning the league only on r-mobility tiebreak. Ethereal and Berserk also finished equal 3rd-4th, but Ethereal had the better head-to-head score, capping a very successful campaign.
The finals started with Stockfish winning the third and sixth openings. When Stockfish further won the 13th opening, it looked like the final might turn into a rout. Leela won the 15th and 17th openings, narrowing the gap, but Stockfish had the last say with victories in the 21st, 22nd and 25th openings. The final score is +17 -13 =20 in favor of Stockfish. Although Leela played second fiddle again, it is still won three openings against Stockfish. In a season where no other engine managed that feat, this itself is an achievement. I for one am curious what the Leela developers come up with next. They have already implemented dag-bord (short for “Directed Acyclic Graph” and “Backup-Only Repetition Draws”) for the FRC leagues with apparent success. If they can find more elo-gaining innovations, Stockfish might encounter more resistance next season.
Season 22 will close with some bonus rounds, beginning with the DFRC – double Fischer Random Chess where the starting position is not the same for both players. Find all games live at https://tcec-chess.com.
Article by Low
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