Draw rate, wins
Final draw rate was 62.5%.
The three most common game termination causes were:
33.9% - TCEC draw rule
25% - TCEC win rule
24.1% - SyzygyTB
There were 2 crashes in the division.
Moves per game
There were only 7 games longer than 100 moves, the
longest was 157 moves (Jonny - Laser, round 4,
Time per game (hours)
were 2-move book openings in this stage chosen by Cato. Each opening
was repeated 4 times in a round, and then again in the reverse games
round. In total 14 2-move openings were used. The first letter of the
ECO codes was
distributed as follows:
If we use the opening 'family name' (using format FAMILY_NAME: VARIANT....) the top 3 are:
QGD - 16 times
Sicilian - 16 times
English - 11 times
engines had a lot of freedom to choose the opening variant. Only 19.6%
of the game pairs repeated the same ECO code twice, and 14.3%
repeated the same opening variant. In 14.3% of the game pairs the ECO
first letter was not repeated twice.
Reverse pairs, wins
Reverse pairs, same moves
Pairs of reverse games diverged very quickly, 91.2% of the pairs
diverged at most after 1 move. The longest repeated move sequence in a
game pair was only 9 plys long.