(;GM[1]FF[4]SZ[19]
GN[pre-Variation 1 answer 'a']
PC[http://senseis.xmp.net/?XuanxuanQijingUnnumberedProblem2/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingUnnumberedProblem2/Attempts

pre-Variation 1 answer 'a']
PL[B]

AB[qb][qc][rd]
AW[pa][pb][pc][qd][qe][qf][qh]

;B[rb]C[B1]MN[1]
;W[ra]C[W2]MN[2]
;B[sc]C[B3]MN[3]
;W[qa]C[W4]MN[4]
;B[re]C[B5]MN[5]
;W[rf]C[W6]MN[6]
;B[se]C[B7]MN[7]
;W[sb]C[W8]MN[8]
;B[sa]C[B9]MN[9]

;
)
