Lambergar v0.5.1
Posted: Sat Mar 30, 2024 12:37 pm
Release Notes
This release brings several bug fixes, with the major one addressing a flaw in the calculation formula for determining the new history value. The previous formula did not limit the history value, leading to an integer overflow issue at certain points, resulting in negative values. Consequently, during move sorting, the best quiet moves were erroneously placed last. This issue was more pronounced during longer time controls, where there were more opportunities to increase the history value. At lower time controls (up to 10 seconds per move), the new formula may actually reduce the engine's strength by 10-20 ELO points. However, at longer time controls, version v0.5.1 demonstrates improvement in engine strength over the previous version. At approximately 1 minute per move, the new version is approximately 50 ELO points stronger, with even more significant gains observed at longer time controls.
https://github.com/jabolcni/Lambergar/r ... tag/v0.5.1
This release brings several bug fixes, with the major one addressing a flaw in the calculation formula for determining the new history value. The previous formula did not limit the history value, leading to an integer overflow issue at certain points, resulting in negative values. Consequently, during move sorting, the best quiet moves were erroneously placed last. This issue was more pronounced during longer time controls, where there were more opportunities to increase the history value. At lower time controls (up to 10 seconds per move), the new formula may actually reduce the engine's strength by 10-20 ELO points. However, at longer time controls, version v0.5.1 demonstrates improvement in engine strength over the previous version. At approximately 1 minute per move, the new version is approximately 50 ELO points stronger, with even more significant gains observed at longer time controls.
https://github.com/jabolcni/Lambergar/r ... tag/v0.5.1
