Pieces =  6
cksum.aa = 4058083470 1425408
cksum.ab = 2852980754 1425408
cksum.ac = 3877989358 1425408
cksum.ad = 2580209134 1425408
cksum.ae = 383600230 1425408
cksum.af = 2331521818 758390