Season 20 premier division statistics

A summary statistics table of previous stages and seasons.  

Draw rate, wins

Final draw rate was 50.0%. 

Game termination

The three most common game termination causes were:

36.2% - SyzygyTB
33.9% - TCEC draw rule
24.6% - Mate

There were no crashes in the stage.

Moves per game

Median= 68
Average= 75.0

There were 39 games longer than 100 moves, the longest was 216 moves (Ethereal - Leela, game 91, draw). 

Time per game (hours)

Median= 2:08
Average= 2:03

Openings

There were 8-move book openings in this stage chosen by Cato. The first letter of the ECO codes was distributed as follows:

The engines had almost no freedom to choose the opening variant, all of the game pairs repeated the same ECO code and the same opening variant twice.

Reverse pairs, wins

Openings were heavily biased in favor of white, there were a lot more biased 1-1 results than usual.

Reverse pairs, same moves

Pairs of reverse games diverged very quickly, 33.9% diverged immediately out of book, 77.7% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 19 plys (Leela - Ethereal, games 119 and 147, QGD semi-Slav, Noteboom variation, two draws)