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.
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: 2026/04/30: Stockfish 260426
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
early bad avg.win
Rank EAS-Score sacs sacs shorts draws moves Engine/player
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1 245643 20.28% 30.81% 21.73% 11.29% 74 Stockfish 260426 a512
2 239326 20.76% 33.27% 22.01% 12.99% 73 Torch 4d a512
3 231283 20.86% 33.46% 18.52% 12.35% 75 Stockfish 18 260131
4 167938 16.18% 28.46% 16.40% 16.13% 78 Reckless 260401 a512
5 158444 16.58% 29.38% 14.67% 16.07% 77 Berserk 250606 a512
6 157403 13.45% 32.82% 16.41% 18.82% 77 PlentyChess 7.0.37
7 155883 13.03% 33.80% 15.80% 16.77% 79 Alexandria 9.0 a512
8 151008 15.46% 36.89% 09.10% 19.64% 84 Tarnished 5.0 a512
9 145553 12.54% 32.18% 16.79% 17.53% 77 Obsidian 250706 a512
10 134899 15.81% 24.53% 17.73% 24.80% 77 KomodoDragon 3.3 avx2
11 129393 13.52% 27.69% 13.61% 19.94% 79 Clover 9.1 a512
12 117836 12.64% 31.81% 08.26% 21.13% 83 Integral 250805 a512
13 115727 11.70% 26.07% 12.55% 22.20% 81 Caissa 1.25 a512
14 109309 12.33% 25.09% 13.33% 25.14% 79 Halogen 16.0 a512
15 99162 10.49% 22.38% 09.80% 23.34% 82 Pawnocchio 1.9 a512
16 95307 07.75% 30.80% 08.92% 24.88% 81 Viridithas 19.0 a512
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*** Average length of all won games: 77 moves
*** Movelimit for early sac bonus : 38 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]:36.89% Tarnished 5.0 a512
[2]:33.80% Alexandria 9.0 a512
[3]:33.46% Stockfish 18 260131
[4]:33.27% Torch 4d a512
[5]:32.82% PlentyChess 7.0.37
B: Most sacrifices overall : [1]:20.86% Stockfish 18 260131
[2]:20.76% Torch 4d a512
[3]:20.28% Stockfish 260426 a512
[4]:16.58% Berserk 250606 a512
[5]:16.18% Reckless 260401 a512
C: Very short wins (47 moves or less) : [1]:01.77% Stockfish 260426 a512
[2]:01.64% Stockfish 18 260131
[3]:01.45% KomodoDragon 3.3 avx2
[4]:01.42% Reckless 260401 a512
[5]:01.36% Torch 4d a512
D: Most short wins overall : [1]:22.01% Torch 4d a512
[2]:21.73% Stockfish 260426 a512
[3]:18.52% Stockfish 18 260131
[4]:17.73% KomodoDragon 3.3 avx2
[5]:16.79% Obsidian 250706 a512
E: Average length of all won games : [1]:073 Torch 4d a512
[2]:074 Stockfish 260426 a512
[3]:075 Stockfish 18 260131
[4]:077 Berserk 250606 a512
[5]:077 KomodoDragon 3.3 avx2
F: Smallest number of bad draws : [1]:11.29% Stockfish 260426 a512
[2]:12.35% Stockfish 18 260131
[3]:12.99% Torch 4d a512
[4]:16.07% Berserk 250606 a512
[5]:16.13% Reckless 260401 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