Solve puzzles by filling a grid with numbers that add up to given clues. Each row and column must contain unique digits. Complete the grid by ensuring all sums match clues and no duplicates exist in any sum.
Solve puzzles with 4 difficulty levels and expert mode. Play against others or solo. Auto save progress and check for errors. Customize themes, use pen, pencil, and eraser tools. Track statistics, achievements, and leaderboards.
Solve Sudoku puzzles with varying difficulty levels. Input numbers manually or use pencil marks. Switch between grid sizes and themes. Track progress and restart puzzles. Share completed grids via social media.
