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: 2026/01/08: Pawnocchio 1.9
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 245069 21.74% 32.38% 19.47% 11.24% 74 Stockfish 260101 a512
2 242555 22.50% 31.06% 19.81% 11.00% 76 Stockfish 17.1 250330
3 214694 18.97% 30.40% 21.18% 13.19% 74 Torch 4a a512
4 177717 14.93% 33.64% 18.03% 17.91% 76 Reckless 251212 a512
5 176684 16.48% 31.11% 14.72% 15.67% 80 Alexandria 8.1.12 a512
6 165440 17.73% 28.14% 15.33% 15.72% 77 Berserk 250606 a512
7 164549 13.46% 30.41% 16.49% 17.75% 76 PlentyChess 7.0.37
8 159068 09.89% 46.61% 12.95% 23.87% 82 Quanticade 3.0 a512
9 157607 13.23% 32.45% 17.10% 17.24% 76 Obsidian 250706 a512
10 140433 14.26% 27.17% 15.18% 19.28% 78 Clover 9.1 a512
11 132553 16.80% 23.11% 18.46% 24.38% 77 KomodoDragon 3.3 avx2
12 119813 13.21% 30.81% 08.53% 20.47% 83 Integral 250805 a512
13 117327 11.48% 24.66% 13.88% 22.30% 79 Caissa 1.24 a512
14 113413 08.37% 28.65% 14.11% 21.21% 77 Stormphrax 7.0 avx2
15 105902 11.16% 22.22% 11.24% 23.55% 81 Pawnocchio 1.9 a512
16 77340 09.03% 21.24% 09.38% 27.70% 80 Viridithas 18.0 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]:46.61% Quanticade 3.0 a512
[2]:33.64% Reckless 251212 a512
[3]:32.45% Obsidian 250706 a512
[4]:32.38% Stockfish 260101 a512
[5]:31.11% Alexandria 8.1.12 a512
B: Most sacrifices overall : [1]:22.50% Stockfish 17.1 250330
[2]:21.74% Stockfish 260101 a512
[3]:18.97% Torch 4a a512
[4]:17.73% Berserk 250606 a512
[5]:16.80% KomodoDragon 3.3 avx2
C: Very short wins (47 moves or less) : [1]:01.84% Stockfish 17.1 250330
[2]:01.84% Reckless 251212 a512
[3]:01.67% Torch 4a a512
[4]:01.67% Stockfish 260101 a512
[5]:01.63% PlentyChess 7.0.37
D: Most short wins overall : [1]:21.18% Torch 4a a512
[2]:19.81% Stockfish 17.1 250330
[3]:19.47% Stockfish 260101 a512
[4]:18.46% KomodoDragon 3.3 avx2
[5]:18.03% Reckless 251212 a512
E: Average length of all won games : [1]:074 Stockfish 260101 a512
[2]:074 Torch 4a a512
[3]:076 Obsidian 250706 a512
[4]:076 PlentyChess 7.0.37
[5]:076 Reckless 251212 a512
F: Smallest number of bad draws : [1]:11.00% Stockfish 17.1 250330
[2]:11.24% Stockfish 260101 a512
[3]:13.19% Torch 4a a512
[4]:15.67% Alexandria 8.1.12 a512
[5]:15.72% Berserk 250606 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