(;GM[1]FF[4]SZ[19]
GN[Placement]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem251/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem251/Solution

Placement]
PL[B]

AB[an][bn][cn][dn][do][go][ho][jo][ap][dp][ep][fp][bq][cq][dq][iq][jq][lq][ar][kr]
AW[ck][bl][dl][em][gm][bo][eo][fo][gp][gq][hq][br][cr][dr][hr][bs][es]
LB[eq:f][fq:g][er:a][fr:b][gr:c][fs:d][hs:e]

;B[gs]C[B1]MN[1]

;LB[eq:f][fq:g][er:a][fr:b][gr:c][fs:d][hs:e]
)
