Season 21 superfinal statistics

A summary statistics table of previous stages and seasons. 

Draw rate, wins

 

Final draw rate was 74%.

Game termination

The three most common game termination causes were:

65% - TCEC draw rule
17% - SyzygyTB

15% - Mate

There were no crashes in the stage.

Moves per game

Median= 65
Average= 73.8

There were 13 games longer than 100 moves, the longest was 217 moves (Stockfish - Leela, game 68, Stockfish won).

Time per game (hours)

 

Median= 3:58
Average= 3:52

Openings

There were variable length book openings in this stage chosen by Jeroen Noomen and GM Matthew Sadler. The first letter of the ECO codes was distributed as follows:

The engines had almost no freedom to choose the opening variant, all the games repeated the same ECO and the same opening variant twice.

Reverse pairs, wins 

Reverse pairs, same moves  

Pairs of reverse games diverged much slower than usual, 12% diverged immediately out of book, 40% of the pairs diverged at most after 1 move. The longest repeated sequence of moves was 13 plys (Leela - Stockfish games 93 and 94, French Winawer (Nimzovich) variation, Stockfish won as white). In fact, the divergence on ply 14 transposed back and the second divergence was after 22 plys.