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
"Very cool! I like the EAS-Tool. Also the game selection was awesome!" - GM Vidit Gujrathi (world ranking #26, Indian Chess Olympiad gold medalist in 2024), 2025/07/28 on Lc0-discord
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 EAS-Tool here
Meanwhile, the scoring-system of the EAS-Tool got really complex, click here and read the EAS-Scoring explanation.
Latest update: 2026/08/21: Cinder 6.0
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): her
early bad avg.win
Rank EAS-Score sacs sacs shorts draws moves Engine/player
---------------------------------------------------------------------------
1 239405 19.95% 31.19% 24.46% 14.45% 73 Torch 4d a512
2 230531 19.38% 28.65% 20.99% 12.46% 74 Stockfish 260803
3 225656 19.55% 31.09% 21.54% 14.31% 75 Stockfish 18 260131
4 167676 13.52% 31.47% 20.20% 20.17% 76 PlentyChess 8.0.0
5 167185 16.59% 25.97% 17.70% 16.96% 78 Reckless 260502 a512
6 166434 17.28% 32.47% 16.04% 18.53% 80 Cinder 6.0 a512
7 162669 19.63% 28.17% 14.37% 18.28% 82 Triumviratus 6.0 AI
8 151722 11.26% 33.04% 19.21% 19.46% 78 Alexandria 9.0 a512
9 143959 09.94% 33.24% 19.18% 20.38% 77 Obsidian 250706 a512
10 135359 14.73% 32.85% 13.78% 21.28% 80 Stormphrax 8.0.0
11 123353 11.42% 29.02% 13.66% 21.69% 80 Quanticade 260810
12 116134 11.22% 28.65% 12.63% 19.34% 82 Coda 0.9.3 AI
13 112131 12.19% 27.48% 10.13% 21.94% 82 Pawnocchio 2.0 a512
14 108104 09.08% 30.87% 12.70% 23.29% 80 Viridithas 20.0 a512
15 96505 11.01% 26.71% 11.57% 25.19% 84 Hobbes 3.0 a512
16 96284 10.19% 27.53% 09.02% 23.71% 83 Integral 250805 a512
-------------------------------------------------------------------
*** Average length of all won games: 78 moves
*** Movelimit for early sac bonus : 39 moves
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: Early sacrifices (percents of all sacs) : [1]:33.24% Obsidian 250706 a512
[2]:33.04% Alexandria 9.0 a512
[3]:32.85% Stormphrax 8.0.0
[4]:32.47% Cinder 6.0 a512
[5]:31.47% PlentyChess 8.0.0
B: Most sacrifices overall : [1]:19.95% Torch 4d a512
[2]:19.63% Triumviratus 6.0 AI
[3]:19.55% Stockfish 18 260131
[4]:19.38% Stockfish 260803
[5]:17.28% Cinder 6.0 a512
C: Very short wins (48 moves or less) : [1]:01.95% Stockfish 260803
[2]:01.84% Stockfish 18 260131
[3]:01.79% Reckless 260502 a512
[4]:01.77% Torch 4d a512
[5]:01.43% PlentyChess 8.0.0
D: Most short wins overall : [1]:24.46% Torch 4d a512
[2]:21.54% Stockfish 18 260131
[3]:20.99% Stockfish 260803
[4]:20.20% PlentyChess 8.0.0
[5]:19.21% Alexandria 9.0 a512
E: Average length of all won games : [1]:073 Torch 4d a512
[2]:074 Stockfish 260803
[3]:075 Stockfish 18 260131
[4]:076 PlentyChess 8.0.0
[5]:077 Obsidian 250706 a512
F: Smallest number of bad draws : [1]:12.46% Stockfish 260803
[2]:14.31% Stockfish 18 260131
[3]:14.45% Torch 4d a512
[4]:16.96% Reckless 260502 a512
[5]:18.28% Triumviratus 6.0 AI
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