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: 2026/06/11: Stockfish 260606
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
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1 254531 21.84% 30.76% 21.16% 10.24% 74 Stockfish 260606
2 243793 21.20% 33.03% 22.58% 12.42% 72 Torch 4d a512
3 239236 22.14% 33.55% 19.42% 11.98% 75 Stockfish 18 260131
4 186226 18.23% 28.78% 16.71% 14.67% 76 Reckless 260502 a512
5 158580 13.09% 34.30% 16.96% 17.78% 76 Obsidian 250706 a512
6 154764 14.95% 32.18% 17.19% 17.26% 78 Alexandria 9.0 a512
7 149848 14.34% 29.55% 17.30% 19.01% 77 PlentyChess 7.0.37
8 147454 16.81% 27.77% 14.20% 16.20% 77 Berserk 14.0 a512
9 141330 14.34% 31.45% 16.15% 24.38% 77 Halogen 16.5 a512
10 127085 14.01% 28.12% 13.96% 20.65% 78 Clover 9.1 a512
11 124880 13.36% 26.85% 13.81% 21.26% 79 Caissa 1.25 a512
12 118481 14.29% 28.54% 09.87% 20.55% 83 Integral 250805 a512
13 114593 10.08% 27.78% 14.48% 21.27% 78 Pawnocchio 260527 a512
14 109577 09.28% 31.75% 12.85% 26.37% 80 Hobbes 2.1 a512
15 105970 08.42% 35.89% 07.66% 22.60% 84 Quanticade 260519 a512
16 93410 08.20% 29.66% 09.59% 25.07% 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]:35.89% Quanticade 260519 a512
[2]:34.30% Obsidian 250706 a512
[3]:33.55% Stockfish 18 260131
[4]:33.03% Torch 4d a512
[5]:32.18% Alexandria 9.0 a512
B: Most sacrifices overall : [1]:22.14% Stockfish 18 260131
[2]:21.84% Stockfish 260606
[3]:21.20% Torch 4d a512
[4]:18.23% Reckless 260502 a512
[5]:16.81% Berserk 14.0 a512
C: Very short wins (47 moves or less) : [1]:01.99% Stockfish 260606
[2]:01.76% Stockfish 18 260131
[3]:01.61% Torch 4d a512
[4]:01.48% Reckless 260502 a512
[5]:01.16% PlentyChess 7.0.37
D: Most short wins overall : [1]:22.58% Torch 4d a512
[2]:21.16% Stockfish 260606
[3]:19.42% Stockfish 18 260131
[4]:17.30% PlentyChess 7.0.37
[5]:17.19% Alexandria 9.0 a512
E: Average length of all won games : [1]:072 Torch 4d a512
[2]:074 Stockfish 260606
[3]:075 Stockfish 18 260131
[4]:076 Obsidian 250706 a512
[5]:076 Reckless 260502 a512
F: Smallest number of bad draws : [1]:10.24% Stockfish 260606
[2]:11.98% Stockfish 18 260131
[3]:12.42% Torch 4d a512
[4]:14.67% Reckless 260502 a512
[5]:16.20% Berserk 14.0 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