function number_of_attacks = find_attacks_YES_NO(A)
  % This functions finds the attacks on the board for arbitrary table size. 
  % The function is called with the board matrix A
  % The return value is either 0 (no attacks) or 1 (at least 1 attack)
  % The function terminates when the first attck is found
    N = size(A, 1);
    [a b]=find(A);
    number_of_attacks=0;
    for i=1:N-1
        p1=a(i);
        q1=b(i);
        for j=i+1:N
            p2=a(j);
            q2=b(j);
            if ((p1==p2) || (q1==q2) || abs(p1-p2)==abs(q1-q2))
                number_of_attacks = 1;   % delete this later
                return;     % delete this later, not part of the program
                % number_of_attacks=number_of_attacks+1;
            end
        end
    end
end