Chess Game (2-Player, Timed/Untimed) 2 Players (same device): White vs Black with name input modal. Time Controls: 5, 10, 15 minutes per side, or No Time (∞). Active player’s clock glows. Smooth UX: Animated highlights for selected squares, legal moves, captures, and king-in-check Sounds & Winner Popup: Click/move sounds and celebratory applause on game end. Auto Promotion: Pawns promote to Queen.een.ueen.