After filing his father’s taxes, Sheldon is outraged when the IRS claims there is a mistake. This leads to a formal audit where Sheldon treats the dispute like a high-level chess match. When he nearly admits defeat due to a technicality, George Sr. provides a "football-esque" pep talk that empowers Sheldon to find a winning argument.
If you’ve legally obtained this file (e.g., purchased a digital copy or ripped your own Blu-ray), here’s how to play it: young sheldon s04e14 h265