(;GM[1]FF[4]SZ[19]
GN[Solution B11 at ''a'']
PC[https://senseis.xmp.net/?XuanxuanQijingProblem145/Solution]AP[GoWiki:2009]
DT[2023-02-07]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem145/Solution

Solution B11 at ''a'']
PL[W]

AB[dm][bo][co][do][fo][gp][dq][hq][dr][hr]
AW[bp][cp][dp][cq][cr]
CR[dq][dr]
LB[ds:a]

;W[cs]C[W1]MN[1]
;B[ap]C[B2]MN[2]
;W[aq]C[W3]MN[3]
;B[br]C[B4]MN[4]
;W[fq]C[W5]MN[5]
;B[fr]C[B6]MN[6]
;W[er]C[W7]MN[7]
;B[eq]C[B8]MN[8]
;W[ep]C[W9]MN[9]
;B[es]C[B10]MN[10]

;CR[dq][dr]
LB[ds:a]
)
