Summary for 2025-01: Focused documentation refinement for chess rules, delivering a precise clarification of castling conditions to reduce gameplay ambiguity and support accurate onboarding of contributors. The work concentrated on improving the accuracy of the game's rule documentation and aligning it with expected behavior, with a specific emphasis on whether castling is allowed when in check and the squares that must not be attacked. No major bugs fixed this month; the emphasis was on documentation quality and rule correctness. Impact includes reduced ambiguity for players and contributors, improved documentation quality, and clearer expectations for future rule-related updates. Technologies/skills demonstrated include technical writing, rule interpretation accuracy, and Git-based documentation discipline.