(;GM[1]FF[4]SZ[19]
GN[Black kills]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem223/Solution]AP[GoWiki:2009]
DT[2023-02-05]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem223/Solution

Black kills]
PL[B]

AB[pb][qb][rb][nc][oc][nd][ne][of][ng][pg][qg][qh][qi][rj]
AW[pc][qc][rc][od][oe][pe][pf][rf]
CR[rj]

;B[sf]C[B1]MN[1]
;W[rg]C[W2]MN[2]
;B[sc]C[B3]MN[3]
;W[sd]C[W4]MN[4]
;B[qf]C[B5]MN[5]
;W[qe]C[W6]MN[6]
;B[re]C[B7]MN[7]
;W[rd]C[W8]MN[8]
;B[sg]C[B9]MN[9]

;CR[rj]
)
