Worked on the lichess-org/scalachess repository to address a critical issue in the chess engine’s middlegame evaluation logic. Focused on algorithm optimization within the Scala codebase, the developer refined the Divider object’s case statements to correct asymmetry in the heuristic function. This targeted fix improved the stability and balance of move scoring during the middlegame, ensuring that symmetric positions are evaluated consistently. By concentrating on precise debugging and maintainable code changes, the work enhanced the engine’s decision quality without introducing new features. The contribution demonstrates expertise in chess engine development and game development, with a strong emphasis on evaluation logic.