Season 21 premier division statistics

A summary statistics table of previous stages and seasons.  

Draw rate, wins

Final draw rate was 58.0%. 

Game termination

The three most common game termination causes were:

41.5% - TCEC draw rule
27.7% - SyzygyTB
24.6% - Mate

There were no crashes in the stage.

Moves per game

Median= 70.3
Average= 81.6

There were 44 games longer than 100 moves, the longest was 333 moves (AllieStein - KomodoDragon, game 149, draw). 

Time per game (hours)

Median= 2:09
Average= 2:07

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

Reverse pairs, same moves

Pairs of reverse games diverged quickly, 25.9% diverged immediately out of book, 59.8% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 15 plys (AllieStein - ScorpioNN, games 61 and 89, Modern defence, AllieStein won in white and drew in black; AllieStein - ScorpioNN, games 173 and 201, Robatsch (modern) defence, two draws)