(;GM[1]FF[4]SZ[19]
GN[Ko]
PC[https://senseis.xmp.net/?GokyoSeimyoVolume3Problem43/Solution]AP[GoWiki:2009]
DT[2023-02-16]
C[Diagram from https://senseis.xmp.net/?GokyoSeimyoVolume3Problem43/Solution

Ko]
PL[W]

AB[qo][ro][pp][oq][pq][qq][pr]
AW[pn][qn][rn][po][np][op][nq][nr][or]

;W[ps]C[W1]MN[1]
;B[qs]C[B2]MN[2]
;W[rs]C[W3]MN[3]
;B[os]C[B4]MN[4]
;W[rq]C[W5]MN[5]
;B[rr]C[B6]MN[6]
;W[sr]C[W7]MN[7]

;
)
