Sunday, October 15, 2023

Season 25 premier division statistics

A summary statistics table of previous stages and seasons. 

Draw rate, wins

Final draw rate was 52.7%. 

Game termination

The three most common game termination causes were:
42.0% - TCEC draw rule
28.0% - SyzygyTB
19.9% - Mate

There was one crash in the stage, Leela crashed on time, a very rare event.

Moves per game

Median= 69.3
Average= 75.2

There were 43 games longer than 100 moves, the longest was 268 moves (Ethereal - Leela, game 135, draw). 

Time per game (hours)

Median= 2:06
Average= 2:03

Openings

There were variable length book openings in this stage. 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 opening variant twice.

Reverse pairs, wins

Reverse pairs, same moves

Pairs of reverse games diverged less quickly than usual, 23.8% diverged immediately out of book, 60.7% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 25 plys (Leela - Stockfish, games 306 and 334, Sicilian Velimirovic attack, two draws) 


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