public void findNumber(int number){
        for (int i=0; i<Drawer.DIMENSION; i++) {
            for (int j=0; j<Drawer.DIMENSION; j++) {
                if ( (checkCol(j, number) || checkLine(i, number) ) ){ //check if digit appears in col or line #
                    if (Drawer.field[i][j]==0){
                        Drawer.field[i][j] = 10;                         //mark not possible cells ##change for MARK?
//                        Drawer.drawField();
//                        System.out.println("current number: "+currentNumber);
//                        System.out.println("marked:" + i + ":" + j);
//                        Sleep.pause(10);
                    }
                }
            markBlock(i,j,number);
            }
        }
    }