Sudoku extended

* more than standard 9x9 Sudokus: from 4x4 to 25x25* large Sudokus for the ambitious : 10x10, 12x12, 14x14, 15x15, 16x16* very large Sudokus for experts : 18x18, 20x20, 24x24, 25x25* small Sudokus also for children : 4x4, 6x6, 8x8 * X-Sudoku variants for all sizes* any number of dynamically calculated games for each type * optimized for mobile phones and tablets of any size* optional portrait or landscape mode* zoom with scroll for large Sudokus* Games can be interrupted and continued at any time* optionally digits, letters or 2-digit numbers* up to 9x9 also child-friendly symbols instead of numbers* Display help for all Sudokus* not only common notes - also coloured markings* many aids for beginners* step-by-step and complete solution mode* Specials in Competition Mode with High Scores