Draw rate, wins
Final draw rate was 51.8%.
Game termination
The three most common game termination causes were:
44.6% - TCEC win rule
21.4% - TCEC draw rule
16.1% - 3-Fold repetition
There were no crashes in the division.
Moves per game
Median= 68.5
Average= 76.7
The games were unusually long compared to previous seasons. Without testing this I have a feeling that the NN engine games were longer on average, as a result of their different attitude towards evaluation. When winning their opponent sometimes was not aware it was losing for a while, and when drawing the NN engines sometimes took more time to realize the game was a draw.
There were 23 games longer than 100 moves, the
longest was 272 moves (Rodent - DeusX, round 27,
draw).
Time per game (hours)
Median= 1:17
Average= 1:17
Openings
There were 2-move book openings in this stage chosen by Cato. 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 - 18 times
QGD - 17 times
English - 10 times
The
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 only 14.3%
repeated the same opening variant. In 12.5% 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, 55.3% diverged immediately out of book, 87.5% of the pairs diverged at most after 1 move.
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