(;GM[1]FF[4]SZ[19]
GN[Ko 1]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem335/Solution]AP[GoWiki:2009]
DT[2023-02-10]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem335/Solution

Ko 1]
PL[W]

AB[rb][pc][pe][qe][re]
AW[ob][oc][od][oe][pf][qf][rg][sg]

;W[pd]C[W1]MN[1]
;B[pb]C[B2]MN[2]
;W[rc]C[W3]MN[3]
;B[qc]C[B4]MN[4]
;W[ra]C[W5]MN[5]
;B[qa]C[B6]MN[6]
;W[sb]C[W7]MN[7]

;
)
