Stefan Pohl Computer Chess

private website for chessengine-tests


 

 

The Engine Aggressiveness Score Ratinglist

 

The world's first engine-ratinglist not measuring strength of engines, but engines's style of play !!!

 

 

The EAS-Score is calculated by my Engines Aggressiveness Statistics Tool out of the games of the gamebase of the SPCC-ratinglist (main-site) (more than 180000 played games overall). Download the tools here

 

The tools are searching for sacrifices in games (from 1 pawnunit-sacs up to 5+ pawnunit-sacs and Queen-sacs) and for won games, which are very short (split into games up to 40/45/50/55/60 moves), Because a weaker player can be playing aggressive, too, the EAS-Score (= Engine Aggressivenes Score, see explanation below) and all other statistics are build on percents from the won games of an engine/player. So, if an engine has won more games, it must win more short games or win games with sacrifices. A weaker engine, which has won less games, need less wins of short games or win games with sacrifices.

EAS-Score is: (percent*100) of the percent-values of the sacs (1-5+ pawnunits) calculated out of the won games by the engine, only.  So, a weak engine (with a small number of won games) can get a high EAS-scoring, too, when the percentof sac-games in the won games is high (and the number of short wins). Higher pawnunits-sacs give bonus-points: 
1 pawnsac = 2x points  *** 2 pawnsac  = 10x points *** 3 pawnsac = 20x points  *** 4 pawnsac = 40x points *** 5+ pawnsac = 80x points *** 5+ Queensac = 150x points 

Additionally, very short won games (percent*100) give bonus-points. If the short games ended before endgame (a check for low material is done), then these points are doubled: 
60 moves= 1x points *** 55 moves= 2x points *** 50 moves= 5x points ***45 moves= 10x points *** 40 moves= 30x points.  

 

Here the EAS-ratinglist and at the right side (for comparsion), the engines and their normal ranking in my SPCC-ratinglist (see main-site). Because calculating the EAS-Scores takes a lot of effort, it is possible, that the 2 ratinglists here will not always include the latest updates of my SPCC-ratinglist from the main-site - sorry for that.

 

Latest update: 2022/08/14: Minic 3.26

 

See the full EAS-statistics (2nd ratinglist is below the EAS-ratinglist with all stats): here

 

Rank  EAS-Score  sacs   shorts   Engine/player 
-----------------------------------------------------
001    086819   31.32%  44.61%  Velvet 4.0.0 avx2 
002    074742   35.60%  33.90%  Uralochka 3.37c avx2 
003    071372   35.28%  36.70%  Dragon 3 aggressive 
004    070776   30.64%  30.37%  Danasah 9.0 avx2 
005    047437   22.89%  23.52%  Slow Chess 2.9 avx2 
006    047277   23.83%  21.08%  Arasan 23.3 avx2 
007    045794   18.81%  29.73%  Wasp 5.50 avx 
008    042414   23.29%  18.87%  Fire 8.NN MCTS avx2 
009    041107   22.98%  23.82%  Lc0 0.29 dnll 791921 
010    040974   27.42%  19.87%  Stockfish 220724 avx2 
011    040963   22.71%  18.90%  Rebel 15.1 avx2 
012    039823   27.37%  20.67%  Stockfish 220806 avx2 
013    036445   19.61%  25.87%  Tucano 10.00 avx2 
014    036259   22.30%  24.04%  Stockfish final HCE 
015    034426   22.28%  12.26%  Fire 8.NN avx2 
016    033752   14.78%  34.57%  Marvin 6.0.0 avx2 
017    031992   21.38%  22.33%  RubiChess 220223 avx2 
018    029372   18.23%  18.60%  Revenge 3.0 avx2 
019    029282   23.40%  18.61%  Stockfish 15 220418 
020    028889   14.53%  25.64%  Weiss 2.0 popc 
021    025745   20.53%  20.91%  Fritz 18 nnue avx2 
022    025014   14.27%  20.12%  Minic 3.22 znver3 
023    024052   21.71%  07.13%  Coiled 1.1 avx2 
024    023923   24.38%  18.51%  KomodoDragon 3.1 avx2 
025    023599   12.90%  24.83%  Combusken 2.0.0 amd64 
026    023014   22.47%  16.89%  KomodoDragon 3.1 MCTS 
027    022345   23.86%  05.21%  Gogobello 3 avx2 
028    022284   12.87%  27.53%  Chiron 5 x64 
029    021757   14.99%  18.10%  Scorpio 3.0.14d cpu 
030    021261   16.62%  20.80%  Nemorino 6.00 avx2 
031    021086   14.99%  18.29%  rofChade 3.0 avx2 
032    019797   09.84%  22.68%  Stash 33.0 popc 
033    017141   16.38%  17.29%  Igel 3.1.0 popavx2 
034    015424   11.17%  12.84%  Halogen 10.23.11 avx2 
035    015314   11.37%  17.38%  Seer 2.5.0 avx2 
036    015194   14.36%  15.11%  Minic 3.26 znver3 
037    014462   10.29%  16.83%  Black Marlin 7.0 avx2 
038    013497   12.82%  04.86%  Koivisto 8.13 avx2 
039    010913   10.01%  13.48%  Clover 3.1 avx2 
040    010783   16.09%  04.18%  Ethereal 13.75 nnue 
041    010612   10.47%  12.38%  Caissa 0.8 avx2 
042    009403   11.14%  06.24%  Berserk 9 avx2 
043    008506   09.43%  06.20%  Zahak 10.0 avx 

   SPCC Ranking
--------------------------
   1 Stockfish 220806 avx2
   2 Stockfish 220724 avx2
   3 Stockfish 15 220418  
   4 KomodoDragon 3.1 avx2
   5 KomodoDragon 3.1 MCTS
   6 Berserk 9 avx2       
   7 Revenge 3.0 avx2     
   8 Koivisto 8.13 avx2   
   9 Ethereal 13.75 nnue  
  10 Fire 8.NN avx2       
  11 Slow Chess 2.9 avx2  
  12 Stockfish final HCE  
  13 Fire 8.NN MCTS avx2  
  14 rofChade 3.0 avx2    
  15 RubiChess 220223 avx2
  16 Seer 2.5.0 avx2      
  17 Minic 3.26 znver3    
  18 Rebel 15.1 avx2      
  19 Uralochka 3.37c avx2 
  20 Black Marlin 7.0 avx2
  21 Nemorino 6.00 avx2   
  22 Igel 3.1.0 popavx2   
  23 Minic 3.22 znver3    
  24 Arasan 23.3 avx2     
  25 Halogen 10.23.11 avx2
  26 Clover 3.1 avx2      
  27 Tucano 10.00 avx2    
  28 Wasp 5.50 avx        
  29 Fritz 18 nnue avx2   
  30 Velvet 4.0.0 avx2    
  31 Coiled 1.1 avx2      
  32 Scorpio 3.0.14d cpu  
  33 Dragon 3 aggressive  
  34 Marvin 6.0.0 avx2    
  35 Gogobello 3 avx2     
  36 Zahak 10.0 avx       
  37 Lc0 0.29 dnll 791921 
  38 Weiss 2.0 popc       
  39 Combusken 2.0.0 amd64
  40 Caissa 0.8 avx2      
  41 Stash 33.0 popc      
  42 Chiron 5 x64         
  43 Danasah 9.0 avx2   


All-time Top10 EAS-Ratinglist

 

This ratinglist contains the 10 engines / engine-versions (later and stronger versions of engines often play less aggressive!) with the highest EAS-score out of my full ratinglist (all tested engines since 2020, except Stockfish Dev-versions). If the same engine would be part of this Top10 list with different versions, the engine-version with the highest EAS-Score is chosen. The full EAS-Ratinglist can be found below the SPCC full-ratinglist - just click here and scroll down...The Elo-numbers were taken from the SPCC full-ratinglist at the time, this Top10 list was updated...

 

Latest update: 2022/08/03: EAS-Tool got a new and better scoring system, so the list had to be re-calculated...

Rank  EAS-Score  sacs   shorts  Engine                   SPCC-Elo
-----------------------------------------------------------------
001    097059   24.57%  30.02%  Pedone 3 avx2              3341
002    086819   31.32%  44.61%  Velvet 4.0.0 avx2          3347
003    083896   36.41%  35.46%  Revenge 1.0 avx2           3475
004    076422   35.32%  33.98%  Uralochka 3.37c avx2       3472
005    071889   31.32%  30.92%  Danasah 9.0 avx2           3222
006    070589   29.38%  36.61%  Arasan 23.0.1 avx2         3339
007    069045   30.02%  34.50%  Rebel 14.1 avx2            3234
008    065509   35.71%  33.18%  Dragon 3 aggressive        3299
009    056621   30.03%  23.83%  Slow Chess 2.5 avx2        3431
010    050845   19.31%  27.57%  Wasp 5.00 avx              3277

 

My 2cents: Very interesting is Pedone 3 (not Pedone 3.1, this version plays not so aggressive!), because it is a "complete" engine: Pedone 3 is free, supports multi-threading and multiPV-analysis, includes an Android-version and the strength can be limited (0-100%) (interesting for owners of an electronic chess-board, who need an Android engine with limited strength). Velvet and Uralochka for example do not support MultiPV-analyzing, Rebel and Danasah do not support multithreading. Revenge 1 (successor of Pedone) is commercial and has no android-version.

Additionally, Pedone plays 2x-3x more high-sacs (3-5+ pawns) than all other aggressive engines (but less small sacs (1 pawn, 2 pawns)) - very cool, IMO.

Download Pedone 3 here


 

The EAS-tools are based on my Sacrifice Games Search Turbo Tool. Use this tool for searching games with sacrifices, only. It is extremly fast and allows to search big pgn-databases very quickly. Download it right here