Major update of the Inanis chess engine, introducing a lot of new features and improvements: Syzygy tablebases, MultiPV, adjusted evaluation and more. Full changelog below.
Strength: 2800 Elo, Link: https://github.com/Tearth/Inanis/releases/tag/v1.1.0
A small patch for the Inanis, addressing bugs found by the TalkChess community. The most important one fixes random crashes caused by the move legality check, giving false indications in rare cases. In the result, illegal moves were processed which led to the board state irreversibly corrupted.
Strength: 2750 Elo, Link: https://github.com/Tearth/Inanis/releases/tag/v1.0.1
The first version of Inanis, a brand new chess engine written in Rust, is finally out! I’ve tried to make it as much feature-complete as possible, so it’s fully usable with any GUI supporting UCI protocol. If you find any bug, please make an issue with possibly the most detailed description and steps to reproduce the problem, so I can investigate it.
Strength: 2750 Elo, Link: https://github.com/Tearth/Inanis/releases/tag/v1.0.0
Half-year ago I did a small text about writing chess engines in C# and performance issues related to it, where I presented a few interesting methods of optimizing the engine. Today, I want to extend it a bit by new elements, some of them related to the lastly released .NET 5 - they aren’t game-changers, but can nicely improve some parts of code.
Just a quick announcement - I’ve made a new bitboard viewer, as a backup for the amazing bitboard calculator made by gekomad which supports my chess development since the beginning. I hope it will be helpful for some of you!
Link: https://tearth.dev/bitboard-viewer/ (with source code available here)
For the last months, I was focused on developing Cosette chess engine, toying with a very wide spectrum of algorithms and language optimizations. The second one was especially interesting because of .NET 5 release, which brings a few interesting speed improvements (I will try to write something about them in the context of the engine soon). In this article, I will show an interesting behavior of inlining intrinsic function in some specific case which led to the dropping of performance in the chess engine.