(;GM[1]FF[4]SZ[19]
GN[Black to move]
PC[https://senseis.xmp.net/?GokyoSeimyoVolume3Problem36/Solution]AP[GoWiki:2009]
DT[2023-02-15]
C[Diagram from https://senseis.xmp.net/?GokyoSeimyoVolume3Problem36/Solution

Black to move]
PL[B]

AB[cn][do][eo][bp][cp][fp][gp][hp][ip][hq][jq][hr]
AW[dp][ep][jp][kp][bq][cq][fq][gq][iq][dr][gr][ir][hs]
LB[er:a][gs:b][js:c]

;B[jr]C[B1]MN[1]
;W[is]C[W2]MN[2]
;B[eq]C[B3]MN[3]
;W[dq]C[W4]MN[4]
;B[fs]C[B5]MN[5]

;LB[er:a][gs:b][js:c]
)
