Pieces =  8
cksum.aa = 801806896 240640
cksum.ab = 1559756539 240640
cksum.ac = 2444650429 240640
cksum.ad = 740066977 240640
cksum.ae = 522256865 240640
cksum.af = 195585663 240640
cksum.ag = 390892777 240640
cksum.ah = 57242822 124842