Sudoku is a complete, neat-looking and responsive Sudoku game built purely in OutSystems. It comes packed with useful features — like hints, validation, difficulty levels, solve/reset options — and pulls puzzles dynamically from a maintained list. Easy to extend and fun to use!

• Difficulty Levels – Easy, Medium, and Hard (selectable from dropdown)
• Validation – Highlights duplicates in row, column, or 3x3 box
• Hint Feature – Max of 9 hints per game, tracked on screen
• Reset and Solve – One click to start over or auto-fill solution
• Random Puzzle Load – Loads a different puzzle each time
• Keyboard Navigation – Tab and Shift+Tab to move around
• Responsive UI – Looks clean and works well on all screens

please note 

• Fixed cells are styled differently and cannot be edited.
• Hint cells get highlighted automatically.
• Invalid inputs get marked as red.
• You can’t go beyond 9 hints — the counter shows how many are left.
• Puzzle is fetched randomly from the table based on the selected level using a simple SQL query.