(;GM[1]FF[4]SZ[19]
GN[White makes a ko]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem201/Attempts]AP[GoWiki:2009]
DT[2018-09-17]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem201/Attempts

White makes a ko]
PL[W]

AB[bo][co][do][dp][dq][eq][fq][cr][gr]
AW[bl][bn][cn][dn][en][eo][ep][fp][gq][hq][dr][er][fr]

;W[br]C[W1]MN[1]
;B[bs]C[B2]MN[2]
;W[cq]C[W3]MN[3]
;B[ds]C[B4]MN[4]

;
)
