Sunday, March 10, 2019

Season 15 division 4a statistics

A summary statistics table of previous stages and seasons. 

Draw rate, wins

Final draw rate was 21.1%. This is very low for TCEC, the lowest draw rate in a stage at least since season 7.

Game termination

The three most common game termination causes were:
65.6% - TCEC win rule
18.9% - SyzygyTB
8.9% - TCEC draw rule

There were no crashes in the stage, quite unusual for a stage with several engines new to TCEC. Well done to the authors and the organizers!

Moves per game

Median= 59.8
Average= 64.9

There were 8 games longer than 100 moves, the longest was 135 moves (Topple - Minic, game 54, Topple won).

Time per game (hours)

Median= 1:03
Average= 1:03


There were 2-move book openings in this stage chosen by Cato. The first letter of the ECO codes was distributed as follows:

The engines had a lot of freedom to choose the opening variant. Yet 64.4% of the game pairs repeated the same ECO code twice, and 62.2% repeated the same opening variant. In 15.6% 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, 46.7% diverged immediately out of book, 77.8% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 11 plys (Rodent - Cheese, games 4 and 49, Sicilian Alapin variation, two wins for white)

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