(;GM[1]FF[4]SZ[19]
GN[Black kills (B11 at ''a'')]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem86/Solution]AP[GoWiki:2009]
DT[2023-02-07]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem86/Solution

Black kills (B11 at ''a'')]
PL[B]

AB[qm][rm][sm][pn][oo][op][oq][nr][pr]
AW[rn][pp][qp][qr][rr]
LB[sp:a]

;B[qs]C[B1]MN[1]
;W[rs]C[W2]MN[2]
;B[sr]C[B3]MN[3]
;W[rp]C[W4]MN[4]
;B[sq]C[B5]MN[5]
;W[sn]C[W6]MN[6]
;B[ro]C[B7]MN[7]
;W[qo]C[W8]MN[8]
;B[qn]C[B9]MN[9]
;W[so]C[W10]MN[10]

;LB[sp:a]
)
