(;GM[1]FF[4]SZ[19]
GN[White to kill]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem6b/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem6b/Solution

White to kill]
PL[W]

AB[bp][bq][dq][dr][es]
AW[bo][do][cp][ep][eq][er][gr]
LB[as:b][cs:a]

;W[dp]C[W1]MN[1]
;B[ar]C[B2]MN[2]
;W[cq]C[W3]MN[3]
;B[cr]C[B4]MN[4]
;W[bs]C[W5]MN[5]
;B[ap]C[B6]MN[6]
;W[br]C[W7]MN[7]

;LB[as:b][cs:a]
)
