Versatile Sudoku

The purpose of Sudoku is to place number (digits) so that each digit appear exactly once in each row, column or tile. Typically a 9×9 board is used with tile size 3×3 and and digits 1 to 9 to fill the board with. This applications also supports a simpler puzzle with board size 6×6, tile size 3×2 and digits 1 to 6. Some fields are preset and cannot be modified. A puzzle is guaranteed to have a single solution. The application allows 5 levels go difficulty. It offers convenient features helping to solve a puzzle.  The application also allows to enter your own puzzle and watch how the computer solves it.