Generate and enter/solve Sudoku puzzles against the clock. Nine grid sizes from 4x4 to 16x16. Five levels of difficulty, to suit all levels of play. Play on your PC or print out to solve the traditional way. Save games to complete later. Fastest times stored with your name! Coaching modes to help you with tricky puzzles. Wrong guesses are highlighted, and possible values for empty squares are pencilled in. Configurable skins and colours.

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