(;GM[1]FF[4]SZ[19]
GN[Black to play]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem210/Solution]AP[GoWiki:2009]
DT[2023-02-10]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem210/Solution

Black to play]
PL[B]

AB[hb][jb][hc][ic][jc][mc][nc][qc][rc][kd][ld][od][rd][je][oe][pe][qe]
AW[ia][ja][ib][kb][mb][nb][kc][lc][oc][pc][pd][qd]

;B[la]C[B1]MN[1]
;W[pb]C[W2]MN[2]
;B[oa]C[B3]MN[3]

;
)
