Pieces =  20
cksum.aa = 479344097 240640
cksum.ab = 3766316891 240640
cksum.ac = 3879436717 240640
cksum.ad = 428113409 240640
cksum.ae = 1963770315 240640
cksum.af = 2109977407 240640
cksum.ag = 1257384960 240640
cksum.ah = 2983952235 240640
cksum.ai = 3056545633 240640
cksum.aj = 3672479671 240640
cksum.ak = 3667500795 240640
cksum.al = 2876191156 240640
cksum.am = 2503838044 240640
cksum.an = 1996969437 240640
cksum.ao = 3502177233 240640
cksum.ap = 2486869338 240640
cksum.aq = 1600138200 240640
cksum.ar = 1492721072 240640
cksum.as = 4115668691 240640
cksum.at = 3506261234 180763