Summary:
- The article discusses Sum Sudoku, a popular mobile game that combines the logic of Sudoku with the challenge of adding up numbers in a grid.
- The game features a classic Sudoku grid with additional rules where the numbers in each row, column, and 3x3 box must add up to a specific target sum.
- Sum Sudoku offers various difficulty levels, the ability to check for mistakes, and the option to play against the clock, making it an engaging and brain-teasing puzzle game for Sudoku enthusiasts.