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: 2026/07/17: Coda 0.9.0 AI (first strong engine, built by AI)
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 259188 20.46% 31.90% 24.33% 12.22% 73 Stockfish 260706
2 242871 19.70% 32.90% 24.92% 13.56% 73 Torch 4d a512
3 229340 20.43% 31.59% 20.43% 12.84% 75 Stockfish 18 260131
4 176302 17.39% 26.56% 17.86% 15.78% 78 Reckless 260502 a512
5 168906 14.10% 29.82% 20.17% 19.36% 76 PlentyChess 8.0.0
6 149867 15.48% 27.34% 16.85% 17.64% 77 Berserk 14.0 a512
7 147287 16.78% 31.65% 11.65% 17.09% 85 Coda 0.9.0 AI
8 144235 12.14% 29.72% 17.34% 18.87% 79 Alexandria 9.0 a512
9 142926 10.69% 33.42% 17.22% 19.56% 78 Obsidian 250706 a512
10 137299 15.09% 32.17% 12.43% 20.70% 80 Stormphrax 8.0.0
11 132799 12.11% 30.67% 16.54% 22.06% 80 Cinder 0.5.1 avx2
12 122867 08.65% 35.68% 13.73% 21.23% 79 Quanticade 260617 a512
13 120015 12.45% 28.96% 09.95% 20.92% 82 Pawnocchio 2.0 a512
14 114430 08.58% 20.67% 16.95% 21.08% 77 Raphael 4.2.0 a512
15 104206 09.10% 29.25% 11.28% 22.08% 80 Viridithas 20.0 a512
16 91910 10.86% 25.76% 08.36% 23.01% 84 Integral 250805 a512
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*** Average length of all won games: 78 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]:35.68% Quanticade 260617 a512
[2]:33.42% Obsidian 250706 a512
[3]:32.90% Torch 4d a512
[4]:32.17% Stormphrax 8.0.0
[5]:31.90% Stockfish 260706
B: Most sacrifices overall : [1]:20.46% Stockfish 260706
[2]:20.43% Stockfish 18 260131
[3]:19.70% Torch 4d a512
[4]:17.39% Reckless 260502 a512
[5]:16.78% Coda 0.9.0 AI
C: Very short wins (48 moves or less) : [1]:02.21% Stockfish 260706
[2]:01.81% Reckless 260502 a512
[3]:01.67% Stockfish 18 260131
[4]:01.65% Raphael 4.2.0 a512
[5]:01.55% Torch 4d a512
D: Most short wins overall : [1]:24.92% Torch 4d a512
[2]:24.33% Stockfish 260706
[3]:20.43% Stockfish 18 260131
[4]:20.17% PlentyChess 8.0.0
[5]:17.86% Reckless 260502 a512
E: Average length of all won games : [1]:073 Stockfish 260706
[2]:073 Torch 4d a512
[3]:075 Stockfish 18 260131
[4]:076 PlentyChess 8.0.0
[5]:077 Berserk 14.0 a512
F: Smallest number of bad draws : [1]:12.22% Stockfish 260706
[2]:12.84% Stockfish 18 260131
[3]:13.56% Torch 4d a512
[4]:15.78% Reckless 260502 a512
[5]:17.09% Coda 0.9.0 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