Author(s): Andrea Manzo (ITA)
Release Date: 2025-01-17
Language(s): C++
Repo Owner: amchess
Repo URL: https://github.com/amchess/Alexander
Alexander is a free UCI chess engine derived from Stockfish family chess engines. For the evaluation function, we utilize the collaboration between Leela Chess Zero and Stockfish, for which we express our sincere gratitude. The goal is to apply Alexander Shashin theory exposed on the following book : https://www.amazon.com/Best-Play-Method-Discovering-Strongest/dp/1936277468 to improve
- base engine strength
- engine’s behaviour on the different positions types (requiring the corresponding algorithm) :
- Tal
- Capablanca
- Petrosian
- the mixed ones
- Tal-Capablanca
- Capablanca-Petrosian
- Tal-Capablanca-Petrosian
Also during the search, to enhance it, we use both standard and Q/Self reinforcement learning.
Aligned with Stockfish
Jan 12, 2025
Increase the depth margin
More info:
Alexander Presentation
https://github.com/amchess/Alexander/releases/download/4.0/Linux.7z
https://github.com/amchess/Alexander/releases/download/4.0/Windows.7z
https://github.com/amchess/Alexander/archive/refs/tags/4.0.zip
Stockfish 17 source:
https://github.com/official-stockfish/Stockfish/archive/refs/tags/sf_17.zip