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: 2026/10/14: Gaia 4.3.3
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 253963 16.41% 32.01% 28.45% 14.36% 73 Stockfish 260930
2 253854 18.80% 30.49% 27.81% 14.30% 73 Torch 4d a512
3 243106 17.21% 30.80% 26.62% 13.20% 74 Stockfish 19 260905
4 178366 15.87% 34.37% 19.18% 18.94% 80 Cinder 6.0 a512
5 176231 17.80% 31.25% 17.38% 19.66% 81 Triumviratus 7.0 AI
6 174456 13.11% 30.20% 22.31% 21.01% 76 PlentyChess 8.0.0
7 174173 16.21% 25.99% 19.11% 17.79% 78 Reckless 260502 a512
8 154916 11.03% 27.90% 22.12% 20.95% 77 Obsidian 250706 a512
9 153952 11.85% 23.61% 21.99% 20.71% 76 Caissa 2.0 a512
10 138125 10.36% 27.27% 19.68% 20.56% 79 Alexandria 9.1 a512
11 137363 09.55% 33.67% 16.26% 22.04% 78 Quanticade 260929
12 135440 13.82% 26.68% 14.60% 19.17% 85 Gaia 4.3.3
13 133698 12.34% 29.48% 15.25% 21.32% 79 Integral 8.0 a512
14 113010 15.98% 29.14% 05.66% 19.25% 100 Coda 0.9.4 AI
15 112897 08.29% 30.68% 13.70% 23.85% 80 Viridithas 20.0 a512
16 107500 11.17% 25.06% 12.45% 23.00% 83 Pawnocchio 2.0 a512
-------------------------------------------------------------------
*** Average length of all won games: 79 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]:34.37% Cinder 6.0 a512
[2]:33.67% Quanticade 260929
[3]:32.01% Stockfish 260930
[4]:31.25% Triumviratus 7.0 AI
[5]:30.80% Stockfish 19 260905
B: Most sacrifices overall : [1]:18.80% Torch 4d a512
[2]:17.80% Triumviratus 7.0 AI
[3]:17.21% Stockfish 19 260905
[4]:16.41% Stockfish 260930
[5]:16.21% Reckless 260502 a512
C: Very short wins (49 moves or less) : [1]:03.15% Stockfish 260930
[2]:02.90% Stockfish 19 260905
[3]:02.78% Torch 4d a512
[4]:02.19% Triumviratus 7.0 AI
[5]:02.08% PlentyChess 8.0.0
D: Most short wins overall : [1]:28.45% Stockfish 260930
[2]:27.81% Torch 4d a512
[3]:26.62% Stockfish 19 260905
[4]:22.31% PlentyChess 8.0.0
[5]:22.12% Obsidian 250706 a512
E: Average length of all won games : [1]:073 Stockfish 260930
[2]:073 Torch 4d a512
[3]:074 Stockfish 19 260905
[4]:076 Caissa 2.0 a512
[5]:076 PlentyChess 8.0.0
F: Smallest number of bad draws : [1]:13.20% Stockfish 19 260905
[2]:14.30% Torch 4d a512
[3]:14.36% Stockfish 260930
[4]:17.79% Reckless 260502 a512
[5]:18.94% Cinder 6.0 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