Draw rate, wins
Final draw rate was 64.3%.
The three most common game termination causes were:
29.5% - TCEC draw rule
28.6% - TCEC win rule
22.3% - SyzygyTB
There were 3 crashes in the division.
Moves per game
There were 12 games longer than 100 moves, the
longest was 173 moves (ChessBrain - Ethereal, round 27,
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:
Sicillian - 20 times
Queen's pawn game - 19 times
Philidor - 9 times
engines had a lot of freedom to choose the opening variant. However, 51.8%
of the game pairs repeated the same ECO code twice, and 42.9%
repeated the same opening variant. In 16.1% 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, 80.3% of the pairs
diverged at most after 1 move. The longest repeated move sequence in a
game pair was only 7 plys long.