(;GM[1]FF[4]SZ[19]
GN[Solution B11 at ''a'']
PC[https://senseis.xmp.net/?XuanxuanQijingProblem200/Solution]AP[GoWiki:2009]
DT[2023-02-05]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem200/Solution

Solution B11 at ''a'']
PL[B]

AB[rg][qi][ri][pj][pk][om][pm][on][oo][pp][qp][rp][rr]
AW[rj][qk][ql][qm][pn][qo][ro]
LB[po:a]

;B[so]C[B1]MN[1]
;W[sn]C[W2]MN[2]
;B[sj]C[B3]MN[3]
;W[sk]C[W4]MN[4]
;B[rl]C[B5]MN[5]
;W[rm]C[W6]MN[6]
;B[sl]C[B7]MN[7]
;W[sm]C[W8]MN[8]
;B[qn]C[B9]MN[9]
;W[rn]C[W10]MN[10]

;LB[po:a]
)
