Draw rate, wins
Final draw rate was 62.5%.
Game termination
The three most common game termination causes were:
29.2% - TCEC draw rule
26.7% - SyzygyTB
22.5% - TCEC win rule
There were 6 crashes in the stage: Booot crashed 3 times and was disqualified, Ginkgo crashed twice and Laser once.
Moves per game
Median= 60.8
Average= 66.6
There were 21 games longer than 100 moves, the longest was 238 moves (Arasan - Ethereal, game 121, Ethereal won).
Time per game (hours)
Median= 1:30
Average= 1:26
Openings
There were 6-move book openings in this stage chosen by Cato. The first letter of the ECO codes was distributed as follows:
The engines had little freedom to choose the opening variant, 75.8% of the game pairs repeated the same ECO code twice, and 71.7% repeated the same opening variant. In 2.5% 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, 38.3% diverged immediately out of book, 74.2% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 13 plys (Andscacs - Ethereal games 35 and 155, French Tarasch closed variation, Andscacs won in white)
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