(;GM[1]FF[4]SZ[19]
GN[Solution:ko]
PC[https://senseis.xmp.net/?GokyoSeimyoVolume3Problem15/Solution]AP[GoWiki:2009]
DT[2023-02-15]
C[Diagram from https://senseis.xmp.net/?GokyoSeimyoVolume3Problem15/Solution

Solution:ko]
PL[B]

AB[po][qo][ro][so][kp][lp][mp][np][op][sp][lq][pq][pr]
AW[pp][qp][rp][jq][kq][mq][nq][oq][rq][sq][kr][lr][qr]
LB[mr:a]

;B[os]C[B1]MN[1]
;W[ns]C[W2]MN[2]
;B[qs]C[B3]MN[3]
;W[rs]C[W4]MN[4]
;B[qq]C[B5]MN[5]

;LB[mr:a]
)
