Friday, March 29, 2019

Season 15 division 2 statistics

A summary statistics table of previous stages and seasons. 

Draw rate, wins

Final draw rate was 53.6%.

Game termination

The three most common game termination causes were:
38.4% - TCEC win rule
19.6% - SyzygyTB
19.6% - TCEC draw rule

Ginkgo crashed twice in the division, but it was reduced to 16 threads and survived.

Moves per game

Median= 61
Average= 72.7

There were 16 games longer than 100 moves, the longest was 244 moves (Game 85, AllieStein - Fritz, draw).

Time per game (hours)

Median= 1:05
Average= 1:04


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

The engines did not have a lot of freedom to choose the opening variant. 78.6% of the game pairs repeated the same ECO code twice, and 76.8% repeated the same opening variant. Only in 1.8% of the game pairs (one game pair) the ECO first letter was not repeated twice.

Reverse pairs, wins

Reverse pairs, same moves 

Pairs of reverse games diverged very quickly, 37.5% diverged immediately out of book, 73.2% of the pairs diverged at most after 1 move. There were many long sequences of repeated moves, the longest was 25 (!) plys (Ginkgo - rofChade, games 58 and 86, QGD Chigorin defense, Ginkgo won as white).

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