Inanis 1.5.0 released
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A new update of the Inanis chess engine: aspiration windows, improved performance and multithreading.
Strength: 3000 Elo, Link: https://github.com/Tearth/Inanis/releases/tag/v1.5.0
Changelog
- Added aspiration windows
- Added support for tuning based on evaluation
- Added “k” and “wdl_ratio” parameters to “tuner” command
- Added prefetching of transposition table entries
- Added packed evaluation
- Added pawn structure to fast evaluation
- Removed “lock material” parameter from “tuner” command
- Removed “Crash Files” UCI option from the release version
- Removed Lazy SMP artificial noise
- Removed allocator, pawn hashtable has fixed size now
- Improved tuner performance and excessive memory usage
- Improved tuner output by setting unused parameters to zero
- Improved indexing of transposition, pawn and perft tables
- Improved rand algorithm (change from xorshift to xorshift*)
- Improved engine strength when using multiple threads
- Improved evaluation parameters
- Improved overall performance
- Incorporated piece values in PST
- Fixed endless search in fixed-nodes mode
- Fixed tuner output filename
- Fixed crash when parsing certain FENs
- Fixed incorrect workload between threads in tuner
- Fixed incorrect evaluation of black pawn chains
History version
| Version | Release date | Elo | Description |
|---|---|---|---|
| 1.5.0 | 01-11-2024 | 3000 | Aspiration windows, improved performance and multithreading |
| 1.4.0 | 03-08-2024 | 2950 | Check extensions, relative PST, countermove heuristic |
| 1.3.0 | 14-06-2024 | 2900 | Gradient descent tuner, improved SEE and evaluation |
| 1.2.0 | 15-01-2023 | 2850 | Better Syzygy support, performance and stability improvement |
| 1.1.1 | 14-08-2022 | 2800 | A bunch of fixes for reported issues, stability improvement |
| 1.1.0 | 31-07-2022 | 2800 | Syzygy tablebases, MultiPV, adjusted evaluation |
| 1.0.1 | 05-04-2022 | 2750 | A bunch of fixes for reported issues, stability improvement |
| 1.0.0 | 02-04-2022 | 2750 | Initial release |
