09 May 2022

TCEC/CCC: Stockfish no.1; Dragon, LCZero - Who's Better?

The previous fortnightly report on the world's leading engine vs. engine competitions was TCEC S22, the Fish Again; CCC17 Bullet Top-3 (April 2022). Here's a summary of that post:-

TCEC: In the S22 Sufi, Stockfish beat KomodoDragon +28-9=63, confirming its status as the world's top engine. The site is running the S22 Subfi between KomodoDragon and LCZero. • CCC: In the 'CCC17 Bullet Semifinals', the leaders are Stockfish, Dragon, and Lc0, well ahead of the other three engines.

Fast forward two weeks... What's the current status?

TCEC: LCZero beat KomodoDragon +24-15=61 in the S22 Subfi to claim bragging rights as the no.2 engine in the world. That was followed by 'S22 - 4x time odds'. The !command provides a nutshell explanation:-

Stockfish vs Stockfish 25%: kind of simulate what effect 4x has, actual 120min+12s (Sufi) vs 30min+3s (QL..L2, Cup, FRC and DFRC) would be too long, so using only 30min+3s vs 7.5min+0.75s, !sufibook, about 2 days

Long-TC Stockfish beat Short-TC Stockfish +33-10=57, proving that a longer time control is an advantage (but we knew that already). The site is currently running a 'VVLTC Bonus'. For an explanation of the acronym VVLTC, see TCEC Stockfish Wins S21; CCC Romance Continues (August 2021).

CCC: In the 'CCC17 Bullet Semifinals', Stockfish, Dragon, and Lc0 finished 1st, 2nd, and 3rd, with each engine comfortably established in its position. The other three engines finished with minus scores. In the 'CCC17 Bullet Challenger', Dragon is only a few games from clinching victory over Lc0. Barring a catastrophe for Dragon, the 'CCC17 Bullet Finals' will see Stockfish vs. Dragon. Does anyone believe that Stockfish will lose?

[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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