Pieces =  6
cksum.aa = 3680478030 1425408
cksum.ab = 3408234108 1425408
cksum.ac = 2529099685 1425408
cksum.ad = 389550092 1425408
cksum.ae = 2901582557 1425408
cksum.af = 1947026149 158069