function [B] = attackedPositions(A, N)
    B = zeros(N);
    [p q] = find(A);
    positions = [p q];
    for i = 1 : size(positions,1)
        temp1 = positions(i, 1);
        temp2 = positions(i, 2);
        B(temp1, temp2) = 1;
        B(temp1, :) = 1;            % row
        B(:, temp2) =1;             % column
    
        while (temp1 > 0 && temp2 > 0)
            B(temp1, temp2) = 1;    % left up
            temp1 = temp1 - 1;
            temp2 = temp2 - 1;
        end
        temp1 = positions(i, 1);
        temp2 = positions(i, 2);

        while (temp1 < N+1 && temp2 < N+1)
            B(temp1, temp2) = 1;    % right down
            temp1 = temp1 + 1;
            temp2 = temp2 + 1;
        end
        temp1 = positions(i, 1);
        temp2 = positions(i, 2);

        while (temp1 > 0 && temp2 < N+1)
            B(temp1, temp2) = 1;    % right up
            temp1 = temp1 - 1;
            temp2 = temp2 + 1;
        end
        temp1 = positions(i, 1);
        temp2 = positions(i, 2);

        while (temp1 < N+1 && temp2 > 0)
            B(temp1, temp2) = 1;    % left down
            temp1 = temp1 + 1;
            temp2 = temp2 - 1;
        end
    end    
end