Pieces =  6
cksum.aa = 2620283618 1425408
cksum.ab = 3968329453 1425408
cksum.ac = 4045471784 1425408
cksum.ad = 2721494461 1425408
cksum.ae = 2058620953 1425408
cksum.af = 2266122125 380138