Stefan Pohl Computer Chess

private website for chessengine-tests


Long thinking-time tournament (with LC Zero CUDA)

 

Playing conditions:

 

Hardware: i7-6700HQ (2.6 GHz) Notebook (Quadcore), Windows 10 64bit, 12GB RAM

Fritzmark: singlecore: 5.3 / 2521 (all AB-engines running on one core, only)

GPU (used by LC Zero): Nvidia Cuda Gforce GTX 950M (4GB memory, grafics: 914 MHz, memory: 1.25 GHz). LC Zero CUDA calculates around 1020 rollouts/s in the starting position (measured with "go infinte"-command until depth 28) with Netsize 20x256

Leela-Ratio: 0.67 for my tournament (opponent engines running singlethread)(what is it? look here) (The Ratio-value of AlphaZero in the match vs. Stockfish 8 was 1.0, and the Ratio-value in TCEC is around 0.35) so a value of 0.67 is very close (and between) to both tournaments.  Better GPUs (like GTX 1080) have much higer Ratio-Values (6 or higher), which means a huge advantage for Leela, when playing vs. other engines and that leads to distorted results (Leela seems to be stronger, than it is).)

Hash: 2 GB per engine

GUI: Fritz 16 GUI (no draw, no resign)

Tablebases: 3-6 Syzygy for GUI (GUI ends all games, when only 6 pieces remain on the chessboard)

Openings: Drawkiller tournament Book. Download it here

Large Memory Pages: Off

Ponder: ON (because the AB-engines are running on one core, only and Leela on the GPU, pondering is no waste of resources here in this tournament)

Thinking time: 9'+7'' per game/engine (average game-duration: 35', so around 40 games per day are played). Because the Drawkiller opening-lines are 13 moves deep, there are 13 * 7'' = 91''= 1.5' added to the base-time by the GUI, before the engines start playing. So the "real" thinking-time is 10.5'+7''...

 

LC Zero Github (information, download Networks and LC Zero Engine): here

Read more about, how LC Zero works, in the LC0-Blog: here

 

 

Current participants: Stockfish 10 and Lc0 v0.21.0 N:50611 - the fight for world's number 1... 

 

Latest update: 2019/03/18 - (Lc0 v0.21.0 N:41476) download all played games here

 

 

 

      Program                         Elo    +    -   Games   Score   Av.Op.  Draws

   1 LF 0.3 N:32930 A:Houdini 6    : 3452   26   26   304    50.3 %   3450   49.3 %
   2 Stockfish 10 64 BMI2          : 3450   11   11  1589    58.5 %   3389   39.5 %
   3 Lc0 v0.20.1 N:32890           : 3393   25   25   308    41.9 %   3450   37.7 %
   4 Lc0 v0.21.0 N:41476           : 3391   28   28   270    41.7 %   3450   38.1 %
   5 Lc0 v0.20.1 N:32567           : 3385   29   29   246    40.9 %   3450   41.1 %
   6 Lc0 v0.21.0 N:41390           : 3384   34   34   178    40.7 %   3450   32.0 %
   7 Lc0 v0.20.2 N:40695           : 3321   29   29   283    32.3 %   3450   35.7 %

 


Games        : 1589 (finished)

White Wins   : 559 (35.2 %)
Black Wins   : 402 (25.3 %)
Draws        : 628 (39.5 %)
Unfinished   : 0

White Score  : 54.9 %
Black Score  : 45.1 %

 


Individual statistics:

 

1 LF 0.3 N:32930 A:Houdini 6 : 3452 304 (+ 78,=150,- 76), 50.3 %

Stockfish 10 64 BMI2         : 304 (+ 78,=150,- 76), 50.3 %

 

2 Stockfish 10 64 BMI2       : 3450 1589 (+616,=628,-345), 58.5 %

Lc0 v0.21.0 N:41476          : 270 (+106,=103,- 61), 58.3 %
Lc0 v0.21.0 N:41390          : 178 (+ 77,= 57,- 44), 59.3 %
LF 0.3 N:32930 A:Houdini 6   : 304 (+ 76,=150,- 78), 49.7 %
Lc0 v0.20.2 N:40695          : 283 (+141,=101,- 41), 67.7 %
Lc0 v0.20.1 N:32890          : 308 (+121,=116,- 71), 58.1 %
Lc0 v0.20.1 N:32567          : 246 (+ 95,=101,- 50), 59.1 %

 

3 Lc0 v0.20.1 N:32890        : 3393 308 (+ 71,=116,-121), 41.9 %

Stockfish 10 64 BMI2         : 308 (+ 71,=116,-121), 41.9 %

 

4 Lc0 v0.21.0 N:41476        : 3391 270 (+ 61,=103,-106), 41.7 %

Stockfish 10 64 BMI2         : 270 (+ 61,=103,-106), 41.7 %

 

5 Lc0 v0.20.1 N:32567        : 3385 246 (+ 50,=101,- 95), 40.9 %

Stockfish 10 64 BMI2         : 246 (+ 50,=101,- 95), 40.9 %

 

6 Lc0 v0.21.0 N:41390        : 3384 178 (+ 44,= 57,- 77), 40.7 %

Stockfish 10 64 BMI2         : 178 (+ 44,= 57,- 77), 40.7 %

 

7 Lc0 v0.20.2 N:40695        : 3321 283 (+ 41,=101,-141), 32.3 %

Stockfish 10 64 BMI2         : 283 (+ 41,=101,-141), 32.3 %