🧩 Interactive Sudoku

📋 How to Play

• Goal: Fill the 9×9 grid so each row, column, and 3×3 box contains digits 1-9
• Controls: Click a cell, then click a number (or use keyboard 1-9)
• Timer: Starts on your first move, stops when puzzle is complete
• Wrong answers: Flash red briefly, but no penalties
• Numbers: Automatically disabled when 9 of that digit are placed