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: 2026/09/24: Caissa 2.0
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
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1 249549 19.09% 29.50% 27.54% 15.15% 73 Torch 4d a512
2 247367 16.84% 32.16% 26.91% 12.95% 74 Stockfish 19 260905
3 231239 16.66% 29.60% 25.84% 14.51% 74 Stockfish 260913
4 175162 17.63% 32.57% 16.99% 19.75% 82 Triumviratus 7.0 AI
5 172527 12.99% 29.64% 21.88% 20.46% 76 PlentyChess 8.0.0
6 168725 16.06% 33.27% 17.56% 19.20% 80 Cinder 6.0 a512
7 166696 16.65% 24.05% 19.02% 17.89% 79 Reckless 260502 a512
8 156492 09.81% 32.11% 20.99% 20.76% 77 Obsidian 250706 a512
9 153798 12.35% 23.28% 22.45% 20.72% 76 Caissa 2.0 a512
10 145562 10.86% 30.56% 20.63% 20.17% 79 Alexandria 9.0 a512
11 136004 13.68% 30.92% 16.16% 21.91% 81 Stormphrax 8.0.0
12 129723 12.33% 27.03% 15.26% 20.63% 79 Integral 8.0 a512
13 129487 10.66% 31.00% 14.47% 22.81% 80 Quanticade 260810
14 114937 15.16% 29.27% 05.68% 18.89% 102 Coda 0.9.4 AI
15 111250 11.80% 26.27% 11.96% 22.68% 83 Pawnocchio 2.0 a512
16 109251 08.13% 29.96% 13.69% 23.68% 81 Viridithas 20.0 a512
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*** 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]:33.27% Cinder 6.0 a512
[2]:32.57% Triumviratus 7.0 AI
[3]:32.16% Stockfish 19 260905
[4]:32.11% Obsidian 250706 a512
[5]:31.00% Quanticade 260810
B: Most sacrifices overall : [1]:19.09% Torch 4d a512
[2]:17.63% Triumviratus 7.0 AI
[3]:16.84% Stockfish 19 260905
[4]:16.66% Stockfish 260913
[5]:16.65% Reckless 260502 a512
C: Very short wins (49 moves or less) : [1]:02.82% Torch 4d a512
[2]:02.69% Stockfish 19 260905
[3]:02.54% Stockfish 260913
[4]:02.08% Reckless 260502 a512
[5]:02.01% Triumviratus 7.0 AI
D: Most short wins overall : [1]:27.54% Torch 4d a512
[2]:26.91% Stockfish 19 260905
[3]:25.84% Stockfish 260913
[4]:22.45% Caissa 2.0 a512
[5]:21.88% PlentyChess 8.0.0
E: Average length of all won games : [1]:073 Torch 4d a512
[2]:074 Stockfish 19 260905
[3]:074 Stockfish 260913
[4]:076 Caissa 2.0 a512
[5]:076 PlentyChess 8.0.0
F: Smallest number of bad draws : [1]:12.95% Stockfish 19 260905
[2]:14.51% Stockfish 260913
[3]:15.15% Torch 4d a512
[4]:17.89% Reckless 260502 a512
[5]:18.89% Coda 0.9.4 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