TCEC S22 DivP, CCC17 Rapid : Both Underway

The title applies to the world's foremost engine vs. engine competitions and builds on the post from two weeks ago, TCEC S22 L1, CCC17 Rapid : Both Underway. To summarize that post:-

TCEC: Koivisto promoted from S22 L3 to L2 to L1, where it is leading. • CCC: In the 'CCC16 Blitz Final', Stockfish beat Dragon. The site then opened the 'CCC17 Rapid' event, finished its 'Qualification' stage, and started the 'Main' stage, where 'top 6 promote to Semifinals'.

Let's report on the current status of both competitions.

TCEC: In S22 L1, Koivisto finished third, a half point behind rofChade and SlowChess, who both promoted to DivP (Premier Division). With two weeks to go in DivP after nearly a week of play, KomodoDragon, Stockfish, and LCZero are in 1st, 2nd, and 3rd, well ahead of the other five engines.

CCC: In the 'CCC17 Rapid Semifinals', which have just finished, Stockfish, Dragon, and Lc0 are 1st, 2nd, and 3rd, well ahead of the other three engines. This echoes the current TCEC situation.

What's next? The structures of the three previous CCC competitions are shown in the chart on the left.

After the semifinals, 'CCC Blitz 2021' and 'CCC16 Rapid' had a final match followed by a runners-up match. 'CCC16 Blitz' had a challenger match to determine the second engine for the final match.

It seems to me that 'CCC16 Blitz' had a better structure. After the final match determines the overall winner, few people care about the lower places.

I'm guessing that the next event in 'CCC17 Rapid' will be a challenger match between Dragon and Lc0. [NB: This is indeed what happened.]

The following table lists the posts where I gave the winners for each of the three events in the chart:-

• 2022-02-28: 'CCC16 Blitz' is in the summary at the start of this post • Stockfish beat Dragon
• [NB: Missing from the chart. See The CCC16 Season (April 2022), for the full story.] 2022-01-17: Stockfish Wins Both TCEC FRC4 and CCC16 Bullet Events • Stockfish beat Dragon
• 2021-12-06: TCEC Swiss 2 in Final Round; Stockfish Wins CCC16 Rapid • Stockfish beat Lc0
• 2021-09-13: • TCEC VSOB 21, CCC Blitz 2021 : Both Still Underway Stockfish beat Lc0

The titles for two of those posts failed to mention the CCC winner. I was probably unsure of the current status of the event. CCC communication with the outside world is not brilliant, but I should be more careful.

[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]