TCEC Season 22
| TCEC Grand Champion | Runner-up |
| ← TCEC Season 21 | TCEC Season 23 → |
The 22nd season of the Top Chess Engine Championship began on 28 January 2022.[1] The defending champion is Stockfish, which defeated Leela Chess Zero in the TCEC Season 21 superfinal.
Overview
Most of the rules of the TCEC remained unchanged for this season, but the infrafinal is now officially scheduled to occur after the end of Premier Division and before the Superfinal. The NNUE uniqueness guideline is also removed.[2]
Results
Leagues
Qualification League
Several new engines participated in the Qualification League: Bit-Genie, BlackMarlin, Mantissa, Velvet, and Zahak all played for the first time. Former Premier Division engine Chiron also participated for the first time since TCEC Season 19. 4 of the 14 engines advanced to League 4. In its second season, Berserk won the division. Newcomer Bit-Genie, which still uses a handcrafted evaluation function, came second. Returning Chiron finished third, and the newcomer Zahak, which uses a neural network for its eval, finished a solid fourth. The lower promotion places were keenly contested, with two engines missing out despite scoring 59.62%.
| Pos | Engine | Pld | W | D | L | Pts | Qualification |
|---|---|---|---|---|---|---|---|
| 1 | Berserk | 26 | 16 | 10 | 0 | 21 | Advance to League 4 |
| 2 | Bit-Genie | 26 | 13 | 12 | 1 | 19 | |
| 3 | Chiron | 26 | 10 | 16 | 0 | 18 | |
| 4 | Zahak | 26 | 10 | 13 | 3 | 16.5 | |
| 5 | Mantissa | 26 | 7 | 17 | 2 | 15.5 | |
| 6 | Black Marlin | 26 | 8 | 15 | 3 | 15.5 | |
| 7 | Invictus | 26 | 7 | 12 | 7 | 13 | |
| 8 | ChessFighter | 26 | 5 | 15 | 6 | 12.5 | |
| 9 | Counter | 26 | 7 | 11 | 8 | 12.5 | |
| 10 | Velvet | 26 | 6 | 13 | 7 | 12.5 | |
| 11 | Asymptote | 26 | 5 | 14 | 7 | 12 | |
| 12 | Cheese | 26 | 2 | 7 | 17 | 5.5 | |
| 13 | Bagatur | 26 | 1 | 8 | 17 | 5 | |
| 14 | tomitankChess | 26 | 1 | 5 | 20 | 3.5 |
League 4
The first-place finisher in QL and rating favorite, Berserk, won the league with +16 =6 -0. Weiss finished second, with one loss, while newcomer and QL runner-up Bit-Genie took third. Drofa was the last engine to promote. The lower promotion places were keenly contested, with Chiron and Zahak, the other two engines that were promoted from QL, missing out by half a point and one point respectively.
At the other end of the table, 3 of the four engines that failed to be promoted or relegated in TCEC season 21, Monolith, Cheng, and Amoeba, were relegated this season. The final engine to be relegated was Nirvana, who along with Drofa was reprieved from relegation last season, due to engines in the upper leagues being removed from this season for not working on the new hardware, for crashing a lot, or for no longer being in active development.
| Pos | Engine | Pld | W | D | L | Pts | Qualification |
|---|---|---|---|---|---|---|---|
| 1 | Berserk | 22 | 16 | 6 | 0 | 19 | Advance to League 3 |
| 2 | Weiss | 22 | 10 | 11 | 1 | 15.5 | |
| 3 | Bit-Genie | 22 | 9 | 9 | 4 | 13.5 | |
| 4 | Drofa | 22 | 5 | 14 | 3 | 12 | |
| 5 | Chiron | 22 | 3 | 17 | 2 | 11.5 | |
| 6 | Zahak | 22 | 5 | 12 | 5 | 11 | |
| 7 | Stash | 22 | 3 | 15 | 4 | 10.5 | |
| 8 | Mr_Bob | 22 | 3 | 14 | 5 | 10 | |
| 9 | Monolith | 22 | 1 | 16 | 5 | 9 | Relegate to QL |
| 10 | Cheng | 22 | 2 | 12 | 8 | 8 | |
| 11 | Amoeba | 22 | 1 | 11 | 10 | 6.5 | |
| 12 | Nirvana | 22 | 0 | 11 | 11 | 5.5 |
References
- ↑ Jittenmeier, Fritz (28 January 2022). "TCEC Season 22 starts today at 17:00 UCT". Schach-Ticker. Retrieved 16 February 2022.
- ↑ "Difference between revisions of "TCEC Leagues Season Rules"". TCEC wiki. 28 January 2022. Retrieved 2 February 2022.
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