Season 20 league 4 statistics

A summary statistics table of previous stages and seasons. 

Draw rate, wins

Final draw rate was 56.7%.

Game termination

The three most common game termination causes were:

43.3% - SyzygyTB
22.2% - Mate
20.0% - TCEC draw rule

There was one crash in the stage, Bagatur crashed without playing a single move.

Moves per game

Median= 63
Average= 65.9

There were 7 games longer than 100 moves, the longest was 149 moves (MrBob - Tucano, game 18, draw).

Time per game (hours) 

Median= 1:06
Average= 1:03

Openings

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, only 48.9% of the game pairs repeated the same ECO code twice, and 44.4% repeated the same opening variant. However, only in 11.1% 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, 51.1% diverged immediately out of book, 77.8% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 8 plys (Tucano - Halogen, games 14 and 59, KP Colorado counter, two white wins)