Pieces =  6
cksum.aa = 272930904 1425408
cksum.ab = 2417045642 1425408
cksum.ac = 3415174144 1425408
cksum.ad = 2696512295 1425408
cksum.ae = 1255271162 1425408
cksum.af = 1112974269 2994