About Master Sudoku GameMaster Sudoku is a Sudoku game which features number tiles that you select after selecting a space on the grid. Select a number on the grid and each of the tiles with that numerical value are outlined in green. If you drag a number tile from the bottom into an incorrect position the puzzle will block your play and use one of your three errors (shown at the bottom left). You can press the lightbulb in the bottom right to take hints. One of the unique features of the game is as you progress some of the sets of 9 squares have squares missing, which require you to use other squares to solve for what number go in the tiles that exist in that area. This is a JavaScript web application which uses cross-platform mobile-friendly HTML. All modern web browsers like Microsoft Edge, Apple Safari, Google Chrome, Mozilla Firefox and Opera should support it. This game works on just about any type of computing device including Microsoft Windows desktop computers, Apple OSX Mac computers, iOS powered tablets and phones like the iPad and iPhone, laptops like the Google Chromebook, and the many types of mobile phones from manufacturers like Samsung which are powered by Google Android.