(;GM[1]FF[4]SZ[19]
GN[Ko]
PC[https://senseis.xmp.net/?GokyoSeimyoVolume3Problem9/Solution]AP[GoWiki:2009]
DT[2023-02-14]
C[Diagram from https://senseis.xmp.net/?GokyoSeimyoVolume3Problem9/Solution

Ko]
PL[W]

AB[oa][pa][ob][qb][qc][rc][sd][re][qf][qg]
AW[nb][pb][rb][mc][oc][pc][qd][rd][pe][pf]

;W[sa]C[W1]MN[1]
;B[sc]C[B2]MN[2]
;W[qa]C[W3]MN[3]

;
)
