(;GM[1]FF[4]SZ[19]
GN[solution]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem172/Solution]AP[GoWiki:2009]
DT[2023-02-05]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem172/Solution

solution]
PL[W]

AB[lb][ob][pb][kc][oc][sc][pd][qd][rd][sd]
AW[ma][qb][mc][nc][pc][qc][rc][od][oe][pf][rf][qg]
CR[qb]

;W[ra]C[W1]MN[1]
;B[sb]C[B2]MN[2]
;W[oa]C[W3]MN[3]
;B[rb]C[B4]MN[4]
;W[pa]C[W5]MN[5]
;B[qa]C[B6]MN[6]

;CR[qb]
)
