Pieces =  6
cksum.aa = 3037184414 1425408
cksum.ab = 3646045893 1425408
cksum.ac = 4088843338 1425408
cksum.ad = 2262813799 1425408
cksum.ae = 1003842807 1425408
cksum.af = 2947800863 320113