About

Sudoku is a popular logic puzzle usually played on a 9x9 grid that must be filled with numbers from 1 to 9 that appear only once in the same row, column, and block. The goal of the game is to fill the entire Sudoku grid in the shortest time possible, but sometimes is just enough to solve the Sudoku puzzle, regardless of the time you spent.

Sudoku Pro allows to play Sudoku online by either using the buttons situated underneath, or entering the numbers manually in the Sudoku grid. There is a button for each number from 1 to 9, and another button with an X to delete a number. Sudoku Pro will alert you if a number is wrongly placed (the color of the number turns red). Additionally, Sudoku Pro tracks the time it takes to solve a Sudoku puzzle.

Sudoku Pro puzzles have a unique solution and can be solved using deductive logic. There are four levels of difficulty to choose from. Easy puzzles can be solved finding single candidates for certain positions. Intermediate puzzles require to find hidden singles too. Difficult puzzles may require additional techniques and have more gaps to fill, while very difficult or Pro puzzles require advanced Sudoku solving techniques or, ultimately, making some assumptions or guessing to progress towards a solution.