STutor vs Sudoku Logica

STutor (for SUDOKU TUTOR) is a no-nonsense sudoku solving APP that can display three level of hints while you are solving a puzzle. There are no AD's; no "in-APP-purchases". Just a program to help you advance your Sudoku solving skills. STUTOR solves puzzles using 5 strategies following a logical sequence of methods. The sequence and methods are described in five (5) HELP screens. STUTOR is most appreciated when it displays clues for solving those pesky Friday/Saturday more advanced puzzles. No more disappointing unsolved puzzles. Puzzles are entered manually in a Sudoku grid or by entering (or pasting) an 81 character string. Puzzles can be saved, recalled, changed, deleted, and reordered in the Archive. Upon pressing any of the bottom buttons (except clr), STUTOR will validate and solve the puzzle. Any subsequent user entries will be compared with the solution. A valid entry is entered into the puzzle. If the entry does not correspond to the solution, all the "possibles" or minis are displayed for that cell. If minis are already displayed, the entered number is removed from the minis. Swiping more that two cells in a row will display minis in the row. Ditto for a column or a group. Swiping through more than two rows, columns or groups will display all minis. The "hint" button toggles between a text only hint and one that also displays a clue on the puzzle. The STEP button displays all hint details and alters the puzzle accordingly.

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. As a special bonus, you can also play minimum Sudoku puzzles with just 17 given digits (clues). 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 · over 100,000 different Sudoku puzzles - all uniquely solvable · over 1,000 17-clue puzzles (minimum Sudoku puzzles) · 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 Ideal for hours of puzzle fun and share your favorite Sudokus with your friends!