Sudoku: Classic & Killer Grids

Whether you have five minutes or want to settle in with a tougher puzzle, there is a grid to suit you. Start with classic Sudoku, move on to Killer Sudoku, or take a break with a Nonogram. Check the calendar for a fresh daily challenge and explore seasonal events featuring classic and Killer levels. Hints help you get moving again, while light, dark and sepia themes let you set the mood. Your regular puzzles are ready to play offline. Three ways to exercise your logic are waiting in one place. Fill a classic Sudoku grid, combine sums and number placement in Killer Sudoku, or uncover the image in a Nonogram. Choose a quick challenge or stay for another round. The daily calendar keeps a new classic puzzle close at hand. Seasonal maps add sequences of classic and Killer levels when you want a longer goal. Hints help when you need them, and light, dark and sepia themes make the board yours. Play your puzzles offline at home or away. Pencil possible numbers into each cell. Your notes update automatically as you fill in the grid.