Thursday, April 9, 2020

Season 17 premier division statistics

A summary statistics table of previous stages and seasons. 

Draw rate, wins


Final draw rate was 77.2%.


Game termination

The three most common game termination causes were:

37.2% - TCEC draw rule
31.1% - SyzygyTB

15.6% - TCEC win rule

There were no crashes in the stage, though there were 4 network failures in the CPU-GPU games. There were 10 games with mate on the board, mostly ScorpioNN losses.

Moves per game


Median= 63.3
Average= 74.7

There were 32 games longer than 100 moves, the longest was 194 moves (Ethereal - Leela, game 104, draw).

Time per game (hours)

 
Median= 2:55
Average= 2:48

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 very quickly, 27.8% diverged immediately out of book, 71.1% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 21 plys (AllieStein - Stockfish games 142 and 172, Sicilian defense, two draws).

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