Releases: amchess/ShashChess
ShashChess 41.2
ShashChess 41.1
Anti Dancing option
ShashChess 41
Aligned with Stockfish 18
Put the networks in the same folder as the engine.
For more infos:
wiki
ShashChess 40
ShashChess 39.1
Aligned with
Sep 13, 2025
Revert "Adjustment of the aspiration window after fail high/low."
Various improvements and bug fixing
ShashChess 39
ShashChess 39 Release: Where Chess Meets Thermodynamics!
I'm thrilled to announce ShashChess 39 - our most scientifically advanced release yet! Aligned with Stockfish's latest optimization (commit ce73441 for sudden death time management, this version revolutionizes chess AI through physics-inspired innovation.
Results:
Match
Positions battery
🌟 Core Breakthrough:
Our new Thermodynamic Resilience Algorithm transforms positions into energy systems - calculating entropy (chaos), internal energy (potential), and critical resilience to determine optimal moves. The result? +4% accuracy in complex positions versus top competitors!
📚 Discover More:
English Presentation: ShashChess39_WhatsNew.pdf
Italian Presentation: ShashChess39_Novità.pdf
🎧 Experience the Revolution:
English Podcast: Resilience & Strategy
Italian Podcast: Resilienza e Strategia
This isn't just an upgrade - it's a paradigm shift where Capablanca meets Carnot. Special thanks to our testing team for validating the 138/256 complex position benchmark and +64 performance in critical nugget positions!
Ready to play with physics?
➡️ Get ShashChess 39 on GitHub
Chess engines will never look at entropy the same way again...
ShashChess 38
ShashChess 38
Aligned with Stockfish patch:
Jan 12, 2025
Increase the depth margin
The AI recognized the significant added value and originality of the derivative ShashChess compared to the original Stockfish. For further details and the great novelties of this version, see this pdf document.
ShashChess 37
Fix mcts
Santiago
ShashChess 36
Aligned with Stockfish 17.
Fixed mcts.
Fixed persisted learning and added the experience book option and an utility for reset (to be done for old experience files) and display content given a fen.
Extended livebook to LiChess in addition to ChessDB.
Removed opening variety and replaced with variety which is now a combo with three values:
-off the default
-standard without loss of elo
-psychological more risky because with elo loss, but not as significant, useful for inviting the engine to a game with psychological/human sacrifices, i.e., strictly speaking, incorrect, but almost impossible to refute.