public static int[][][] generateFrom(int[][] brett){
        int[][][] res = new int[9][9][9];
        for (int i = 0; i < res.length; i++) {
            for (int j = 0; j < res.length; j++) {
                int[] alt;
                if(brett[i][j]==0){
                    alt = new int[]{1,2,3,4,5,6,7,8,9};
                }
                else{
                    alt = new int[9];
                    for(int k=1; k<=9; k++){
                        if(brett[i][j]== k) alt[k-1]=k;
                    }
                }
                res[i][j]= alt;
            }
        }
        return res;
    }