20 June 2022

Stockfish Wins TCEC Cup 10; TCEC Swiss 3, CCC17 Blitz both Underway

Due to a vacation, it's been four weeks since my fortnightly report on the world's two foremost, ongoing engine vs. engine competitions: TCEC Cup 10 Underway; Stockfish Wins CCC17 Bullet (May 2022). The summary of that report is shorter than most summaries:-

TCEC: The site launched the 'Cup 10' event, using a 32-engine knockout format. • CCC: In the 'CCC17 Bullet Finals' Stockfish beat Dragon. The site is currently preparing the 'CCC17 Blitz Qualification' event, the first stage in the next multi-stage competition.

Given that Stockfish is the undisputed no.1 in the universe of chess engines, the last few posts have all tackled the issue of no.2:-

Back to the question 'Dragon, LCZero - Who's Better?'

Let's look at what happened during the month since the previous report.

TCEC: In 'Cup 10', Stockfish beat LCZero +4-2=4 in a semifinal match, then beat KomodoDragon +2-1=9 in the final match. LCZero beat Revenge +5-1=4 in the match for third place. Less than a week after 'Cup 10', the site launched 'Swiss 3' with 48 engines competing over 11 rounds. The event is currrently in the seventh round and should finish early in July.

For the final post on the TCEC's previous Swiss event, see KomodoDragon Wins TCEC Swiss 2; CCC16 Bullet Semifinals Underway (December 2021). Will KomodoDragon repeat its success? It is currently trailing tournament leader Stockfish by 1.5 points, with both engines still to play their seventh round matches.

CCC: In the 'CCC17 Blitz' event, the three engines that promoted from the 8-engine Qualification stage all finished in the bottom half of the 12-engine Main stage. Of the six engines that promoted from the Main stage, Stockfish, Dragon, and Lc0 finished in that order, well ahead of the other three engines.

The same pattern is holding for the Semifinal stage, with Dragon and Lc0 tied for second/third place. If they hold those places, they will meet in a 480-game Challenger match to decide which engine meets Stockfish in the match for the 480-game Final stage. The Semifinal finishes in a few days.

[For further information from the various stakeholders in the engine-to-engine events, see the tab 'TCEC/CCC Links' at the top of this page. • NB: Leela = LC0 = LCzero; Dragon = KomodoDragon]

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