TCEC S17 L1 Underway; CCC12 Bonus Series

Since the previous report two weeks ago, TCEC S17 L2, CCC12 Rd.3 Underway, what has happened with the world's leading engine-vs-engine competitions? First here's a summary of the previous report:-

TCEC: The QL [Qualification League] stage finished with half of the engines qualifying into the next stage, L2 [League 2]. L2 is currently underway. • CCC: CCC12 rounds 1 & 2 have finished, and the last of four matches for rd.3 is currently underway.

Following is a summary of the past two weeks plus the current status.

TCEC: L2 finished with 8 of the 16 engines qualifying into L1 [League 1], which is underway. Between L2 & L1, more events of the type I documented in my previous post, TCEC PCT Handicap Events, were played, specifically:-

S17 - Stockfish 3pct vs CPU L1 Test 1 [through 'Test 4']

In L1, only a handful of games have been played by each engine. The 16-engine CPU tournament will finish end-February. The top four engines will eventually compete in a playoff along with qualifying GPU engines for a total of four places in the Premier Division.

CCC: CCC12 was won by Lc0, which beat Leelenstein +26-9=166 in the final match. Stockfish beat Scorpio +51-9=140 in the consolation match. Lc0 eliminated Stockfish in the semifinal match +29-15=156. The following chart shows the results of the last three rounds.

After the event ended, the CCC ran a series of bonus matches including a round robin using 'No-Castling' rules. The current tournament, a six-engine affair titled 'A February Event', ends in a few days.

What are CCC's plans for the next season? The info command !ccc13 says, 'see !schedule'; the !schedule command says, 'see !next'; and the !next command says, 'The next event will be "A February Event"', bringing us full circle to the current tournament...

[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]