Pieces =  6
cksum.aa = 2485542619 1425408
cksum.ab = 1854139327 1425408
cksum.ac = 672903128 1425408
cksum.ad = 4131892998 1425408
cksum.ae = 2882676425 1425408
cksum.af = 1032285236 982771