Enter your moves using algebraic notation (for example e4, Nf3, or O-O). You play as White against the built‑in computer opponent. Use the drop‑down labeled “Opponent strength” to adjust how strong the computer plays (Easy, Medium or Hard). After you submit a legal move (click “Make Move” or press Enter), the computer will respond automatically. Illegal moves are rejected. Use the “Show Board” button to reveal the current position. You can reset the game at any time.