Stefan Pohl Computer Chessprivate website for chessengine-tests
The Engine Aggressiveness Score Ratinglist
The world's first engine-ratinglist not measuring strength of engines, but engines's style of play !!!
The EAS-Score is calculated by my Engines Aggressiveness Statistics Tool out of the games of the gamebase of the SPCC-ratinglist (main-site) (more than 180000 played games overall). Download the tools here
The tools are searching for sacrifices in games (from 1 pawnunit-sacs up to 5+ pawnunit-sacs and Queen-sacs) and for won games, which are very short (split into games up to 40/45/50/55/60 moves), Because a weaker player can be playing aggressive, too, the EAS-Score (= Engine Aggressivenes Score, see explanation below) and all other statistics are build on percents from the won games of an engine/player. So, if an engine has won more games, it must win more short games or win games with sacrifices. A weaker engine, which has won less games, need less wins of short games or win games with sacrifices. EAS-Score is: (percent*100) of the percent-values of the sacs (1-5+ pawnunits) calculated out of the won games by the engine, only. So, a weak engine (with a small number of won games) can get a high EAS-scoring, too, when the percentof sac-games in the won games is high (and the number of short wins). Higher pawnunits-sacs give bonus-points: Additionally, very short won games (percent*100) give bonus-points. If the short games ended before endgame (a check for low material is done), then these points are doubled:
Here the EAS-ratinglist and at the right side (for comparsion), the engines and their normal ranking in my SPCC-ratinglist (see main-site). Because calculating the EAS-Scores takes a lot of effort, it is possible, that the 2 ratinglists here will not always include the latest updates of my SPCC-ratinglist from the main-site - sorry for that.
Latest update: 2022/08/14: Minic 3.26
See the full EAS-statistics (2nd ratinglist is below the EAS-ratinglist with all stats): here
All-time Top10 EAS-Ratinglist
This ratinglist contains the 10 engines / engine-versions (later and stronger versions of engines often play less aggressive!) with the highest EAS-score out of my full ratinglist (all tested engines since 2020, except Stockfish Dev-versions). If the same engine would be part of this Top10 list with different versions, the engine-version with the highest EAS-Score is chosen. The full EAS-Ratinglist can be found below the SPCC full-ratinglist - just click here and scroll down...The Elo-numbers were taken from the SPCC full-ratinglist at the time, this Top10 list was updated...
Latest update: 2022/08/03: EAS-Tool got a new and better scoring system, so the list had to be re-calculated... Rank EAS-Score sacs shorts Engine SPCC-Elo
My 2cents: Very interesting is Pedone 3 (not Pedone 3.1, this version plays not so aggressive!), because it is a "complete" engine: Pedone 3 is free, supports multi-threading and multiPV-analysis, includes an Android-version and the strength can be limited (0-100%) (interesting for owners of an electronic chess-board, who need an Android engine with limited strength). Velvet and Uralochka for example do not support MultiPV-analyzing, Rebel and Danasah do not support multithreading. Revenge 1 (successor of Pedone) is commercial and has no android-version. Additionally, Pedone plays 2x-3x more high-sacs (3-5+ pawns) than all other aggressive engines (but less small sacs (1 pawn, 2 pawns)) - very cool, IMO. Download Pedone 3 here
The EAS-tools are 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 |