function T4_B2schachbrett(k)


n=zeros([k,k]);
zeile1=ones(1,k);
zeile1(1:2:k)=0;
zeile2=zeros(1,k);
zeile2(1:2:k)=1;

for pos=1:2:k;
    n(pos,:)=zeile1
    n(pos+1,:)=zeile2
end
imagesc(n)
