Martyn developed an ad-blocking performance enhancement for the uBlockOrigin/uAssets repository, focusing on optimizing how the Chess.com sidebar ad is blocked. Using JavaScript and ad-blocking techniques, Martyn implemented a DOM-presence guard that activates only when the targeted ad element exists, reducing unnecessary processing and improving overall efficiency. This targeted approach minimized CPU overhead and accelerated page rendering, directly benefiting user experience. The work was scoped cleanly within uAssets, with clear commit traceability and attention to code maintainability. While the contribution was limited to a single feature over one month, it demonstrated thoughtful engineering and a precise solution to a specific problem.