(;GM[1]FF[4]SZ[19]
GN[Black kills]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem154/Solution]AP[GoWiki:2009]
DT[2023-02-09]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem154/Solution

Black kills]
PL[B]

AB[ka][oa][pa][qa][kb][rb][kc][rc][kd][rd][le][me][re][nf][of][pf][qf][rf]
AW[la][ma][lb][ob][lc][oc][qc][ld][nd][qd][ne][pe][qe]

;B[nb]C[B1]MN[1]
;W[na]C[W2]MN[2]
;B[nc]C[B3]MN[3]
;W[mc]C[W4]MN[4]
;B[pc]C[B5]MN[5]
;W[pb]C[W6]MN[6]
;B[od]C[B7]MN[7]

;
)
