...You can also click one of the buttons under the table:
Click "Back" to cancel last entered number.
Click the red "Reset Board" button to start a new puzzle.
Click "Solve Now" to let the computer choose numbers.
This is useful when the trial and error strategy is required.
MUSoSu - Marios Sudoku, is a sudoku solver/ generator written in Java. As a solver, it emphasizes in solving sudokus in a human-like manner. As a generator it generates sudoku problems that do not need trial & error methods to solve.