Season 13 division 1 statistics

Draw rate, wins



Final draw rate was 62.5%.

Game termination

The three most common game termination causes were:
33.9% - TCEC draw rule
25% - TCEC win rule
24.1% - SyzygyTB

There were 2 crashes in the division.

Moves per game



Median= 55.3
Average= 61.1

There were only 7 games longer than 100 moves, the longest was 157 moves (Jonny - Laser, round 4, draw). 

Time per game (hours)



Median= 2:06
Average= 2:04

Openings

There 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:
QGD - 16 times
Sicilian - 16 times
English - 11 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 14.3% repeated the same opening variant. In 14.3% 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, 91.2% of the pairs diverged at most after 1 move. The longest repeated move sequence in a game pair was only 9 plys long.