(;GM[1]FF[4]SZ[19]
GN[White's[local ko threat\]]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem70/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem70/Solution

White's[local ko threat\]]
PL[W]

AB[cn][bo][do][ap][ep][eq][gq][br][cr][fr][as][cs]
AW[bp][cp][aq][bq][dq][ar][dr][er]

;W[es]C[W1]MN[1]
;B[dp]C[B2]MN[2]

;
)
