Pieces =  20
cksum.aa = 2797021731 240640
cksum.ab = 362962491 240640
cksum.ac = 2118355269 240640
cksum.ad = 76622839 240640
cksum.ae = 2317762008 240640
cksum.af = 3881640914 240640
cksum.ag = 297312028 240640
cksum.ah = 95154919 240640
cksum.ai = 2972657825 240640
cksum.aj = 1671099103 240640
cksum.ak = 2298793265 240640
cksum.al = 1613415453 240640
cksum.am = 3704009623 240640
cksum.an = 3646046604 240640
cksum.ao = 1616420327 240640
cksum.ap = 2268227259 240640
cksum.aq = 1445541600 240640
cksum.ar = 3237323724 240640
cksum.as = 1582758229 240640
cksum.at = 2545666630 117103