given sudoku can be solved or not. if the sudoku can not be solved it always gets into a loop and doesnt get out.

for example if the given sudoku isnt possible to solve because there are already two even numbers in the same row

this is my method:

public void solve( int row, int col ) throws Exception { // Throw an exception to stop the process if the puzzle is solved if( row > 8 ){ //Gelöst } // If the cell is not empty, continue with the next cell if( sudo[row][col] != 0 ){ next( row, col ) ; } else { // Find a valid number for the empty cell for( int num = 1; num < 10; num++ ) { if( checkHorizontal(row,num) == false && checkVertikal(col,num)== false&& checkBox(row,col,num)== false ) { sudo[row][col] = num ; // Delegate work on the next cell to a resudosive call next( row, col ) ; } } // No valid number was found, clean up and return to caller sudo[row][col] = 0 ; } }

public void next( int row, int col ) throws Exception { if( col < 8 ) solve( row, col + 1 ) ; else solve( row + 1, 0 ) ; }

This post has been edited by **Buttertoast**: 27 February 2013 - 02:58 PM