(;GM[1]FF[4]SZ[19]
GN[Black to play]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem158/Solution]AP[GoWiki:2009]
DT[2023-02-08]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem158/Solution

Black to play]
PL[B]

AB[bm][dm][cn][bo][do][eo][bp][ep][gp][fq][gr]
AW[bn][co][cp][dp][bq][eq][er][fr]
LB[hr:a][fs:b]

;B[br]C[B1]MN[1]
;W[ap]C[W2]MN[2]
;B[cr]C[B3]MN[3]
;W[cq]C[W4]MN[4]
;B[an]C[B5]MN[5]
;W[gs]C[W6]MN[6]

;LB[hr:a][fs:b]
)
