TCEC S23 L1, CCC19 Blitz - Both Underway

The summer season is traditionally a slow season for chess, but the world's two foremost engine vs. engine competitions keep chugging along at the same speed as during the other seasons. Let's start our fortnightly post with a summary of the previous post, TCEC S23 Leagues Underway; CCC Rudderless? (August 2022):-

TCEC: S23 QL has finished and L2 is just getting started. • CCC: Stockfish beat Lc0 in the 300 game 'CCC18 Rapid Final', after which the site launched a 'CCC18 Rapid Challenger' 300-game consolation match between Dragon and Lc0. The CCC has deviated from the sequence of events seen in CCC16 and CCC17. Has it undergone some sort of administrative shake-up?

Two weeks can be a long time in engine competitions. What has happened since that previous post?

TCEC: S23 L2 finished with four engines promoting. The 12-engine L1 is in the second of its four round robins with Minic having the best chance of the four L2 engines to promote to the next stage, the Premier Division.

CCC: Dragon edged Lc0 by three points in the 'CCC18 Rapid Challenger' match. Later the site started a series of 'CCC19 Blitz' events. It's not clear what direction it intends to take with the new season, so I'll say no more for this current post.

Between CCC18 and CCC19, the CCC launched an eight-engine 'Chess 324 Bonus' event. It was won by Stockfish with a four point lead over second place Dragon, which finished eight ponts ahead of third place Ethereal. Lc0 finished fifth, a point better than an even score. The bonus event was followed by an 'Chess 324 In-house [whatever that means] Final' match between Dragon and Ethereal. Dragon won by 21 points, without losing a single game. For more about the two events, plus some speculation on the administrative shake-up I noted two weeks ago, see last week's post Chess324 Is a Thing (September 2022).

[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]