Notepad Calendar 2025 Sudoku. Ultimate sudoku provides hours of entertainment while sharpening your mind. Every puzzle in this calendar is created by nikoli, the best sudoku makers in the world—not a computer—to balance toughness and solvability and keep.
The week begins with the easiest puzzles and the difficulty increases. Every puzzle in this calendar is created by nikoli, the best sudoku makers in the world—not a computer—to balance toughness and solvability and keep you hooked.
