Hard Some benefits of playing Sudoku may include reducing anxiety and stress, and improving concentration, problem-solving skills, logical thinking, and memory.  

Easy Some benefits of playing Sudoku may include reducing anxiety and stress, and improving concentration, problem-solving skills, logical thinking, and memory.

Medium Some benefits of playing Sudoku may include reducing anxiety and stress, and improving concentration, problem-solving skills, logical thinking, and memory.

Hard Some benefits of playing Sudoku may include reducing anxiety and stress, and improving concentration, problem-solving skills, logical thinking, and memory.