Sudoku Challenge HD

Sudoku in a highly motivating challenge mode. Can you unlock all levels? - Highly motivating challenge modus - Pencil In functionality - Resume games where you left them off - Easy Tutorial - Touchscreen Support - Unlimited number of Sudokus to play once the challenge is solved (Sudoku Generator) - Supports landscape and portrait mode - Optimized for phones and tablets Free, with ads. With downloading the game, you explicitly agree to the Terms of Usage set forth at: http://www.apptebo.com/game_tou.html