Pieces =  18
cksum.aa = 3616899052 240640
cksum.ab = 1373323027 240640
cksum.ac = 2253963089 240640
cksum.ad = 3219789402 240640
cksum.ae = 1193698734 240640
cksum.af = 4018601657 240640
cksum.ag = 3993705712 240640
cksum.ah = 2865667985 240640
cksum.ai = 862936116 240640
cksum.aj = 951636261 240640
cksum.ak = 2897525581 240640
cksum.al = 2306961649 240640
cksum.am = 4223599966 240640
cksum.an = 614883104 240640
cksum.ao = 2464419019 240640
cksum.ap = 3246343905 240640
cksum.aq = 3859009839 240640
cksum.ar = 2901742251 116948