Pieces =  6
cksum.aa = 771919048 1425408
cksum.ab = 3539082670 1425408
cksum.ac = 3155111520 1425408
cksum.ad = 3002892762 1425408
cksum.ae = 211265734 1425408
cksum.af = 2556589605 1378737