Stefan Pohl Computer Chess

Home of famous UHO openings and EAS Ratinglist


The Engine Aggressiveness Score Ratinglist

 

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

 

"Elo is not the end to the means, playing style is, and Stefan's EAS tool is still the best around to measure aggressiveness." - Ed Schroeder (Computerchess legend, author of Rebel engine and famous chesscomputers (Mephisto MM IV, Polgar, Milano, Risc and many more!)), 2024

 

 

The EAS-Score is calculated by my Engines Aggressiveness Statistics Tool out of the games of the gamebase of the UHO-Top15 Ratinglist (main-site) (120000 played games overall). Download the tool here

Meanwhile, the scoring-system of the EAS-Tool got really complex, click here and read the EAS-Scoring explanation.

Here the EAS-ratinglist and at the right side (for comparison), the engines and their normal ranking in my UHO-Top15 Ratinglist (see main-site).

 

Latest update: 2025/07/14: Reckless 250630

 

See the full EAS-Statistics of Top15 (+ 2nd ratinglist containing all single-stats): here

See the full UHO Ratinglist (with full EAS-Ratinglist just down below): here

 

                                 bad  avg.win 
Rank  EAS-Score  sacs   shorts  draws  moves  Engine/player 
-------------------------------------------------------------------
   1    165175  22.46%  14.19%  09.62%   75   Stockfish 250629 a512  
   2    161412  22.47%  14.48%  09.87%   75   Stockfish 17.1 250330  
   3    109677  17.63%  11.51%  14.91%   76   Berserk 250606 a512  
   4    104064  13.22%  15.35%  18.66%   75   Horsie 1.1 a512  
   5    101294  13.21%  15.54%  17.08%   74   Torch 3.1 a512  
   6     87760  12.32%  12.26%  16.60%   77   Obsidian 250706 a512  
   7     87212  12.24%  14.17%  18.31%   76   PlentyChess 6.02 a512  
   8     76205  11.67%  12.70%  20.61%   79   Alexandria 8.0 a512  
   9     73019  15.53%  13.56%  23.55%   76   KomodoDragon 3.3 avx2  
  10     72098  12.87%  11.61%  18.67%   83   RubiChess 250606 a512  
  11     65676  11.57%  10.51%  21.13%   78   Reckless 250630 bmi2  
  12     63859  08.19%  10.50%  21.43%   77   Stormphrax 7.0 avx2  
  13     62364  12.62%  05.95%  19.06%   83   Integral 250708 a512  
  14     61057  11.26%  08.87%  23.74%   81   Caissa 1.22 a512  
  15     57111  14.15%  06.63%  21.79%   88   Ethereal 14.38 avx2  
  16     36394  08.00%  08.05%  28.42%   81   Viridithas 17.0 a512  
-------------------------------------------------------------------
*** Average length of all won games:     78 moves

   for comparison
   UHO-Top15 Ranking
--------------------------
   1 Stockfish 250629 a512
   2 Stockfish 17.1 250330
   3 Obsidian 250706 a512 
   4 Torch 3.1 a512       
   5 Integral 250708 a512 
   6 PlentyChess 6.02 a512
   7 Berserk 250606 a512  
   8 Reckless 250630 bmi2 
   9 Alexandria 8.0 a512  
  10 KomodoDragon 3.3 avx2
  11 Caissa 1.22 a512     
  12 Stormphrax 7.0 avx2  
  13 Viridithas 17.0 a512 
  14 Horsie 1.1 a512      
  15 RubiChess 250606 a512
  16 Ethereal 14.38 avx2  


EAS single statistics Highscores (Top 5 Engines)

 

Mention, all EAS-Stats are percent-values, not absolute numbers. So, a weaker engine (with much fewer wins than (for example) Stockfish), can achieve high EAS-Stats and Highscores, too...

A: Most high-value sacrifices (3+ pawnunits)         : [1]:03.73% Stockfish 250629 a512  
                                                       [2]:03.49% Stockfish 17.1 250330  
                                                       [3]:02.09% Horsie 1.1 a512  
                                                       [4]:01.95% Berserk 250606 a512  
                                                       [5]:01.72% Torch 3.1 a512  


B: Most sacrifices overall                           : [1]:22.47% Stockfish 17.1 250330  
                                                       [2]:22.46% Stockfish 250629 a512  
                                                       [3]:17.63% Berserk 250606 a512  
                                                       [4]:15.53% KomodoDragon 3.3 avx2  
                                                       [5]:14.15% Ethereal 14.38 avx2  


C: Very short wins (45 moves or less)                : [1]:01.11% Stockfish 17.1 250330  
                                                       [2]:01.00% Stockfish 250629 a512  
                                                       [3]:00.82% Horsie 1.1 a512  
                                                       [4]:00.73% Obsidian 250706 a512  
                                                       [5]:00.73% Alexandria 8.0 a512  


D: Most short wins overall                           : [1]:15.54% Torch 3.1 a512  
                                                       [2]:15.35% Horsie 1.1 a512  
                                                       [3]:14.48% Stockfish 17.1 250330  
                                                       [4]:14.19% Stockfish 250629 a512  
                                                       [5]:14.17% PlentyChess 6.02 a512  


E: Average length of all won games                   : [1]:074 Torch 3.1 a512  
                                                       [2]:075 Horsie 1.1 a512  
                                                       [3]:075 Stockfish 17.1 250330  
                                                       [4]:075 Stockfish 250629 a512  
                                                       [5]:076 Berserk 250606 a512  


F: Smallest number of bad draws                      : [1]:09.62% Stockfish 250629 a512  
                                                       [2]:09.87% Stockfish 17.1 250330  
                                                       [3]:14.91% Berserk 250606 a512  
                                                       [4]:16.60% Obsidian 250706 a512  
                                                       [5]:17.08% Torch 3.1 a512  


 

The EAS-tool is 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