Pieces =  18
cksum.aa = 4108976089 240640
cksum.ab = 1442829835 240640
cksum.ac = 1722736694 240640
cksum.ad = 837172588 240640
cksum.ae = 3323889162 240640
cksum.af = 166651179 240640
cksum.ag = 667386982 240640
cksum.ah = 1683392411 240640
cksum.ai = 1993607064 240640
cksum.aj = 104734550 240640
cksum.ak = 4186860361 240640
cksum.al = 3396525304 240640
cksum.am = 2415630377 240640
cksum.an = 4239309736 240640
cksum.ao = 2239877055 240640
cksum.ap = 899722294 240640
cksum.aq = 738676098 240640
cksum.ar = 1154621872 157619