Pieces =  12
cksum.aa = 386476498 240640
cksum.ab = 1914624235 240640
cksum.ac = 3298945695 240640
cksum.ad = 2443293504 240640
cksum.ae = 710404826 240640
cksum.af = 1707547429 240640
cksum.ag = 3673633092 240640
cksum.ah = 1450008886 240640
cksum.ai = 718488183 240640
cksum.aj = 2937717201 240640
cksum.ak = 1413212826 240640
cksum.al = 2321256566 12259