(;GM[1]FF[4]SZ[19]
GN[White's try for ko]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem6/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem6/Solution

White's try for ko]
PL[W]

AB[ap][bp][bq][dq][ar][dr][es]
AW[bo][do][cp][ep][eq][er][gr][bs]
CR[es]

;W[cr]C[W1]MN[1]
;B[cq]C[B2]MN[2]
;W[ds]C[W3]MN[3]
;B[br]C[B4]MN[4]

;CR[es]
)
