The operation of Sudoku Logica is very simple and it is suitable for beginners as well as for professionals because of the four help levels, the eleven difficulty levels, the logical explaining help and the 40 strategies of the training games. Thus, there is the necessary challenge for every taste! The most important features: · Ad-free and without in-app purchases · Does not require an Internet connection · 100,000 different Sudoku puzzles - all clearly solvable · 11 difficulty levels and 4 help levels selectable · The higher the difficulty level, the more difficult strategies are required to solve a Sudoku puzzle · Training games with and without detailed instructions for each of the 40 strategies - ideal for learning the strategies · Logical explaining help available at any time, also in the form of explanatory tips for the current problem · Same digits are highlighted to make patterns easier to see · Pencil notes that are automatically erased when a digit is set · Automatic saving · Marking of incorrectly set digits possible · Undo and redo function, e.g. to fix the marked errors