Jeroen Noomen has made his TCEC 19 superfinal book available for download. His comments:
"The TCEC 19 superfinal ended Friday, October 16th and was won by Stockfish by 54.5-45.5 vs Leela Chess Zero. In wins 18-9, with 73 draws. Just like the S18 superfinal book, the S19 book was way more risky than S16 and before. Nevertheless, the S19 book also had several balanced lines and theoretically interesting lines. Interestingly, all wins were only in (very) dubious openings. Balanced lines and slightly dubious lines had a 100% draw rate. A sign of the times?
You can download the S19 superfinal book from the following location:
http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=33689
Some interesting statistics:
In the Leela wins, the book exit evaluations by Leela were: 0.43 / 0.54 / 0.50 / 0.46 / 0.66 / 0.48 / 0.56 / 0.52 / 0.63
I.e. the lowest book exit that led to a win was 0.43 (which is quite high by Leela standards). All other white Leela games that had lower exits ended in a draw.
In the SF wins, the book exit evaluations by SF were: 1.14 / 0.99 / 0.77 / 0.63 / 0.98 / 1.39 / 1.06 / 1.19 / 1.14 / 1.20 / 0.70 / 0.66 / 1.38 / 1.05 / 0.91 / 1.27 / 1.00 / 0.85 (note: with contempt=24)
I.e. the lowest book exit that led to a win was 0.63. All other white SF games that had lower exits ended in a draw.
Conclusions:
1. All balanced lines, slightly unbalanced lines and slightly dubious lines ended in draws => the draw rate for such lines is 100%;
2. The ONLY wins in this superfinal were scored in (very) dubious lines.
zaterdag 17 oktober 2020
TCEC 19 superfinal opening PGN available
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