Pieces =  12
cksum.aa = 2874486022 240640
cksum.ab = 3789383223 240640
cksum.ac = 2048522936 240640
cksum.ad = 2449132026 240640
cksum.ae = 2884700688 240640
cksum.af = 1852662018 240640
cksum.ag = 2003655837 240640
cksum.ah = 3922807874 240640
cksum.ai = 2864168959 240640
cksum.aj = 3112224097 240640
cksum.ak = 2392704798 240640
cksum.al = 2535349463 117801