(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem21/Solution]AP[GoWiki:2009]
DT[2014-05-31]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem21/Solution

Solution]
PL[W]

AB[bn][bo][co][br][cr]
AW[bk][cl][bm][cn][dn][do][dp][eq][er]

;W[an]C[W1]MN[1]
;B[cp]C[B2]MN[2]
;W[ao]C[W3]MN[3]
;B[ap]C[B4]MN[4]
;W[cq]C[W5]MN[5]
;B[am]C[B6]MN[6]
;W[bq]C[W7]MN[7]
;B[aq]C[B8]MN[8]
;W[dq]C[W9]MN[9]
;B[as]C[B10]MN[10]

;
)
