Pieces =  20
cksum.aa = 913810453 240640
cksum.ab = 3351794578 240640
cksum.ac = 2218280309 240640
cksum.ad = 101154824 240640
cksum.ae = 431554941 240640
cksum.af = 3304899083 240640
cksum.ag = 821388252 240640
cksum.ah = 2091622253 240640
cksum.ai = 2520501089 240640
cksum.aj = 4038462012 240640
cksum.ak = 39257725 240640
cksum.al = 2144136155 240640
cksum.am = 2994168065 240640
cksum.an = 421106947 240640
cksum.ao = 3199059465 240640
cksum.ap = 1527012125 240640
cksum.aq = 1157649300 240640
cksum.ar = 1272061024 240640
cksum.as = 520802418 240640
cksum.at = 3351935805 238352