Introducing the new Microsoft Sudoku, the #1 logic puzzle game makes the most of your Windows device. Microsoft Sudoku is the classic game you love, with a modern look and feel and exciting new features. With five difficulty levels, fresh daily challenges, achievements and leaderboards, Microsoft Sudoku provides hundreds of brain training puzzles for players of all ages. New to Sudoku? Microsoft Sudoku is great for beginners too, and contains a full explanation on how to play as well as tips and tricks to help you improve your skill! All Input Methods Supported You can input numbers using a mouse, keyboard, touchscreen, or even write them using a stylus. Daily Challenges Keep your mind ultra-sharp with fresh new daily challenges: Irregular Sudoku uses a grid broken up into different shapes, while Symbol Sudoku replaces numbers with intriguing colors and icons. Complete enough Daily Challenges in a month to earn badges and compete with your friends. Cloud Saves with your Microsoft Account Play across all your Windows 8.1 or Windows 10 devices without ever losing progress. Log in with your Microsoft account and all your data will be saved in the cloud. You can resume any game exactly where you left it on any Windows 8.1 or Windows 10 device that is connected to the Internet. Hints and Guides Need a little help? Use hints to solve selected cells, or some of the optional guide functions that block duplicates, show mistakes, or enter notes for you. Xbox Live Integration Sign in with your Microsoft account to earn achievements, compete with your friends on the leaderboards, and track your personal gameplay statistics. If you sign in with a Microsoft account, your progress is stored in the cloud so you can play the game on any device without missing a beat!